Anyone know where I can find good info on doing a 5 lug conversion on my '03 ep?

Also as I wanted to do an engine swap - would a K20A-R accept the same modifications (intake, induction, exhaust, etc) as the K20A2? If not, would I be better just swapping for the A2? I've heard different horse and torque quotes for the R engine also, could someone clear this all up for me?