I'm pretty sure these fit the std 2wd manifold, you don't have to do any head mods if you don't want to, but will need a complete remap/chip whatever you do, assuming you want more power a swap to greys or similar would be wise, dependant on how much you want.
A alcon 6 paddle would be my choice of clutch, with alcon cover also.
I would talk to who ever is doing the chip/map for parts advice.
tabetha