Engine

[dedrater]

Is the engine in the 2.5 rs the same as the one in the sti. Also are they alot of aftermarket parts for the 2.5 rs.

[moger21]

for your first question that would be a no, and then for your second one that would be a yes

[SabreKhan]

Well, as for your first question, the easy answer is "no," but the real answer is "yes, but drastically modified for different applications (including modifications to the block itself), so no."