I've got these, they're good: http://www.powergridinc.com/swaybar.asp
uses a sealed THK joint instead of a clunky rose-joint...

I think you should eliminate the likely cause of the problem, rather than adding more bits (cash) to try and fix it. 

waiting on adj. cambertops., will get it after that. trying to do a few things in one go. if i cant find a resonably priced adjustable tie rod ends then the RCA's will be ditched.
i did drive the car on the weekend to my local mechanic 3 mins down the road to see if they can help with the damper adjustment nut that was stuck, they managed to half help me but it just needed some time with some wd40, it drives ok and is now quite stiffer after i fiddled with damper settings but i can still feel somethings not right in the rear end. feels wobbly lol, im sure the alignment is the majority of it, will have to wait couple of weeks for the cambertops to get here.
 
cheers

ok so the alignment was done, didnt get a sheet printout so dont know the numbers now but all wheels are sitting well
passenger front wheel had a lot of toe out but everythign else wasnt too bad
the car still has the rear end swaying, it has slightly gotten better but i can still feel it not settled
if i turn the steerign wheel from left to right while driving (like they do in the F1 races lol) its like its wobbling around/swaying in the back end a bit and then settles, front feels fine
i also noticed accelerating into a freeway entrance etc, the rear end is quiet bouncya nd quiet scary so i had to back off the throttle
 
the RCA.s are still in there as we decided to keep them on and see if the alignment fixed the issue..
 
the issue is only the rear is doing it, the front feels quite nice
 
could somethign else be out of whack in the rear???
 
didnt think changing over to coilovers were going to be this bad
 
also found out that i had cut springs in my previous suspension so it was quite firm, the oilovers i ahve now feel much softer
 
cheers

they are all TOE in now thats much i know but cant remember how much.
im not sure about how to adjust the compression on the shocks
for the damping i have a cliker thing on the top of the coilovers which i can adjust
will be trying that soon
this is driving me mad, hope i havent got dud coilovers.

The knob on the top is probably compression. I reckon adjust the rebound if you can cause it will slow the springs return to normal and stop the car bouncing back as the load comes off the wheel. Stand to be corrected by any suspension experts out there

When I mean pretensioning the spring, I mean winding the bits under the springs up so that it shortens the distance between the bottom of the spring and the top of the strut.
 
This will make it stiffer, but at the same time increase the ride height. The other option is to get some after market springs that are a little stiffer than the 5kgs (e.g. get some 6kg springs) from Swift or another aftermarket spring company.
 
I assume you've already wound the damper settings to the hardest setting as well (I never really noticed a huge amount of difference when I had my SS).