the 4wd stuff will fit the 2wd car
the 2wd stuff won't fit the 4wd car

there may be a little bit of jiggery pokery involved in fitting it but i ca't think it would need cutting and shutting as esentially it's only going to go a different route to clear the downpipes

that said i fitted a 4wd cossie system to my V6 and it bolted up directly to the 2 pipes so that's what i'm basing my theory on