Why waste your time and money on the s2000 engined one when Ive seen many a stroker 3.1 L28 240k coupes and four doors eat them alive in club racing in Shizuoka.
The four door versions usually killed the coupes to my shock horror but in factory trim these babies with an L20 6 weighed only 980Kgs!!!! So you can only imagine race ones... What bugged me too was that the L28 is apparantely a tad heavier than the hemi six!! So how do these heavy over engineered bottom ends still allow the car to be so light??? (oh thats right they are made like a sheet of kleenex)
Also dont forget that rb engined ones give even more frills on a budget. Or to be daring with that kleenex reinforcement you could try the alloy v8 found on the Japan only sold CIMA.