Originally Posted by Jasher325
It's either a K20A2 or K20A-R{<---JDM) for the 02 civic si.
100% incorrect
RSX-S (01-04) = K20a2
RSX-S (05+) = K20z1
ITR = K20a
CTR = K20a
Euro CTR = K20a2
RSX = K20a3
EP Si (02-05) = K20a3
FG Si (06+) = K20z3
Not worth it, don't do it.
Steve