Hi Turlock,
I think there is another couple of chaps on here that track their 2's but they are a little quiet, hopefully we will see some good discussions around setup etc if you start a few threads...
I can't speak for track but for road... for fluids I use Halfords, TRD and performance parts I order from TB Developments or Fensport (both in the UK), some people recommend Camskill in the UK also for MR2 suspension/engine parts. There's also some specialist tuning shops around like Courture Auto and TDP. I recently had my some work done at TDP and they produced a good result with a lot of attention to detail so I would recommend them (
www.tdp.ie).
Anyway welcome to the site. What colour is your MR2?