Camber?

Well if your complaining that the car is too stiff its probably the damper set to full hard and 3 clicks from full hard...
Poor turn in would be related to toe in at the front.
 
Im no expert. Just giving you some input.

I have a 97 bathurst and people that have driven my car all say it understeers, but I find it quite neutral and can drift it through 2nd gear corners like the last turn at Wakefield Park. Wheel alignment is one thing, but the way you drive it also has a huge effect on the way the car behaves. I find with my car (and probably with yours), it needs a fair bit of trail braking as you're entering a corner to shift the weight balance to the front and get the front tyres to grip. In a car with a 50/50 weight distribution like an mx5 or s2000 you need nowhere near as much brakes on entry to balance the car. Hence why my mates who own those cars and drive my one complain it understeers because they're driving it as they though it's an mx5 or s2000.
 
On the exit, jumping on the gas too hard or too soon will probably give understeer like you're experiencing. When you get on the gas, it shifts the weight to the rear. Since our NA engines don't have the power to break the rears into a powerslide, it tends to understeer instead due to the weight being moved off the front tyres.
 
My advice would be to take it to a track day or 2 and really explore the handling before you start mucking with parts or alignment. Once you get in tune with the car, you might find it's actually ok. Or perhaps you'll find it's no good but you'll be in a much better position to figure out what needs changing.
 
Having said all that, there should be more camber at the front than the rear. Or even the same amount. More at the rear is a bit odd. And soften the dampers a bit. Never go full hard or full soft. I've seen a few different shock dynos and the clicks towards the extremes either do nothing or way too much depending on the brand. Only the real expensive stuff (penske, ohlins etc) have nice linear adjustment all the way. 

760?? Damn, yeah that'll give you some understeer.

I didn't see your post just before mine adrian. I have no idea how you drive your car with so much understeer.
 
When my car was understeering lots I found that getting on the throttle early would make it worse but light throttle or none at all would not give me enough grip at the rear and the tail would suddenly let go on entry.
 
Then again both the front shocks were leaking to the point where they were doing nothing at all, it was like driving a boat so a lot more extreme then your understeer.
 
I also found mrplow's and highlander's cars to understeer a fair bit when I drove them, maybe I just like going sideways too much.

Are you running 225 tyres front and rear? Is your car post 93? They have revised rear suspension geometry and tend to understeer more than the earlier ones. Easy enough to swap in an early crossmember and shorter trailing arms.
When I first got my SW20 it had 17x7 +45 front and back, Federal 595s 215 front 225 rear, suffered some understeer.
When I got some better offset wheels 17x7 +32 front and 17x8 +35 rear swapped the Federals from the old wheels it improved a bit.
Then I went to 17x8 +35 front and 17x9 +35 rear with Potenza RE001 all round and it completely changed the car! Very hard to induce understeer, turn in is amazing!
 
Until I had the Potenzas I never realised just how much of a difference a good set of tyres makes!
 
Good Luck!

I know dat feel bro when I had 14 yo tyres at the front, 3-4 yo rears LOL
AD08-esque tyres will be nice especially if ur considering tracking it in the future. Would not settle for less lol. In theory SW20s should run a bit of stagger tyre setup but meh whatever works for you. (doesn't 225 front scrub?)
In addition to all the very good advice given above I will also suggest adding camber bolts if it seems to have limited adjustablility. 2-3 deg front and 2-2.5 rear should be pretty good

There's no need to swap the front tires from a 205 just because its an 8 inch rim. I run 205/40's on a 8

If anything, a bit of tire stretch is a good thing as it helps eliminate tire flex while cornering.