Hi all im looking to buy myself an s15 dream car* and i have two options which are the same value its either buy an nissan silvia s15 spec r with the sr20det engine *or buy a spec s and put a 2jz engine it it im looking for 500 horsepower i also could rebuild and**forge the sr20det engine but will it**achieve the 500hp* also which one would hold the better value over the years ,anyone could help me decide* on this one that was in the same position also the car is going to be a weekend car so no drifting competitions maybe a roundabout or two *occasionally*