youll probably be alright with a SPEC 1 clutch if you dont go past 5 psi on the T-28 kit, but I tell ya, its so tempting not to turn up the boost. With about 5 psi, youll probably be putting down 220 whp so youll be fine. Although, if your only shooting for 220 whp, why not just save the money and do an oval port 3.0L and put down the same power for a whole lot less?