Well personally I have a soft spot for the second gen GSXs. And IMo they have tremendous potential if you are willing to spend a bit on them.
Basically drop in a 1st gen 4g63 6 bolt, change its front and center diffs to quaifes, get one of road race engineering's suspension kits and you'll have yourself one heck of a track car.
On the other hand the mr2 will be a tremendous track car too with a superior MR layout. however if will be much less practical than the GSX and it will suck in the snow and bad weather.
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