The FWD and RWD KA have the distributors in different locations, and the manifolds are totally, completely different.
the S13 block *might* bolt up to the Alty head, but I dunno there.
try checking the motorsports forum.. there's some talk about it there as well.
also look on 240sxforums for answers to this. it's common material there.
seximagtr said:Autozone had the exact same distributor for both the s13 and the altima.... of course this is autozone so you may wanna make sure. If he's changing the head - might as well change the intake manifold to the altima one.... same goes for the exhaust manifold - I just looked at the FSM for both and they look similar.... maybe I need to look at it in detail but at first glance they look similar.