mr2 turbo
mid engine, rear wheel drive, 2 seats, light, excellent handling.... pick one up for $4,000.... maybe a t3/t4 hybrid turbo, intercooler, exhaust, lower, and you should be arround the 12's.... and for about 7,000....
other cars
-300zx.... dont kno if u can get a TT in good shape for that much
-240sx.... good at drifting
-eclipse.... dont think u can get a good shape gsx though
maybe a gst though
-3000gt...
-rx7 turbo...maybe if ur luckey, but that will probably be all of ur money there