Hey mate, id assume you would have a second gen 3sge, if i was you i would just overhaul the existing one you have now. in the end if u get a new motor u could see yourself re building it etc. where if u rebuild the one you have now and put aftermarket pistons camshafts, cams etc you will se yourself possibly save around 1000-4000aus(depending if u are hands on). and have a faster car hope that helps craig