yeah I would prob still go for the S14 engine. my main priority if I were looking for a SR20DET would be finding one from a legitimate source where I could be positive of its condition, comp/leakdown test and NO QUESTION as to the amt. of mileage. I would want a very low mile engine. and finding a low milage S15 engine is not only going to be difficult, but very very expensive. and if I could find it and afford it? yeah I suppose I would consider it, why not. although they say if its too good to be true, it probably isn't (low milage S15 for a reasonable price? not gonna happen)