http://www.mr2.com/vba_cmps.php
a lot of atlanta people there.
the main guy "Ncturnal" has a shop called Tora that specializes in MR2s in Atlanta, he says hes moving the shop to someplace, hasnt said where.

you can boost them on the stock turbo/stock fuel to 12-15psi safely. on mr2oc or mr2board or google do a seach for "mr2 power primer". it tells the steps to get the power you want.

a basic setup to 280whp would be:
ct27 turbo from ATS Racing
fuel upgrades
exhaust
boost controller
better side mount intercooler
above the 280-300whp mark it gets pricey