It has to be possible as there are S15's with S14a gearbox's (which are the same as the Spec S) & S14a's with S15 6 speed boxes but I haven't seen it done in a Spec S.... Evilchap had a 6 speed in his 200sx so he might be able to shed some light on whats required for the swap :thumbs:
on s15 na autech version there is a 6 speed gearbox , i think it is possible , but if oyu have a stoch engine maybe it will be too "hard " four your engine because between na gearbox and turbo gearbox we havent the same final gear (4.701 vs 3.11 ( im not sur about this numbers ))
I'm an amature here but i plan to tune my sr20de to the same spec as the autec version eg.. rebuild the head with high lift cams, free flow induction/exhaust them remap her 200bhp(if thats possible) surly it could handle the gigger ratio then ?
What have you done to yours? whats the best way to get a bit more power from the sr20de?. could i change the compreeion with a stroker kit, would i save much money doing it myself ( by that i mean my old man dose it and i watch)
I've sold mine I didn't do anything with the engine other than basic breathing mods (induction kit & cat-back exhaust) because anything else will be mad money...