Originally Posted by
EludeR
NA SR internals are not weaker, higher compression limits how much boost you can run on pump gas. Correct me if I am wrong, but I believe the rods crankshaft (and pretty much the entire rotating assembly - the pistons are the exact same part #'s). The NA sr's also use a different waterpump and oil pump I believe and do not make use of coil per plug ignition (i.e. they use a distributor).
Edit: In the past I have read that the factory KA harness can be used on the NA SR, not entirely sure if this is true however.
i think the pistons may be different, and theres no oil squirters, aside from that, its near identical. uses a distributor instead of a cas, but if you want to later, you can swap all the det ignition stuff.
sr20de is a way overlooked and underrated swap in my opinion.