My MR2 (turbo) is my daily and my weekender and my occasional track/skidpan toy after my other MR2 (NA - Auto) was unfortunately written off.
 
Its pretty comfortable with the Tien Superstreet even though its on 17s/18s on a 40 profile tyre.
Its got a pretty quite exhaust system, which has a nice note at idle. One of my pet hates are a droning exhaust system.
 
As for audio, I have a little alpine 10" sub behind driver seat (which allows seat to move completely as stock) and the amp behind the passenger side.
Running a set of Alpine 6.5" Component Type X (just the REF's) in the doors with the tweeters mounted in the factory spot (93+ tweeter covers) and sounds brilliant - I haven't got anything wired up in the rear, I dont think anything is really needed either.
 
One thing that I have made sure always works is the AC. Kept always on, on one steady temperature.
Also had seats re-trimmed as the fabric and foam was starting to give way. It made them much more supportive but still very comfortable (wanted to stay away from aftermarket seats as the factory seats are so comfy)
 
Will need to look into a clutch soon - need to find one that's 'daily' friendly in traffic but will still hold up to light track use.

excedy 5 puck sprung hub seems to do the job pretty well.... i use it for street and my mate uses it for track.... both are 200rwkw+

Sorry slow response - been away. Yes, all the bushings were from Twos'RUs. If your stock shocks are OK then a) I think they must have been changed and b) I agree you don't need to change immediately - mine were completely shot as revealed by my first track day - when we changed them we could tip pints of water out of the old ones which shows how much damping they must have been applying :D

Tree

Did you end up getting Two'r Us bushings? My mod list is basically same as yours (will be) Graham without the Konis and I've had comments on my car being slightly on the stiffer side of things, which I agree (thus making the post). I might just hold off the Konis for now until my driving exceeds the stock shocks (which seems to be decent condition strange given the car's age, maybe previous owner changed it :D)
Also need to wait until the sign in front of my money balance is a plus haha
Thanks for the tip

I recommend the BC RD series Coilovers.
Ride is great, not back breaking stiff, fully damp adjustable for track and front camber adjustment.
 
Loving the handling since I installed my set.

thought about running one of those tangband drivers in one of those factory subwoofer boxes? They are well worth the money.