i just ordered diamond pistons, valves and valve springs, arp studs, and cometic head gasket because im getting the motor rebuilt. im also going to be ordering OTT stage 1 and OTT heat exchanger.... and eventually jbp's drop in cams as long as testing goes good and they come out soon. my questions is, will a 3" exhaust be too much? i have full hahn exhaust on my mind.

 

they say 3" for around 300 hp... but if your getting 280 or so i dont see it being a problem.... atleast if you get the 3" you have room to grow if you decide to start making big hp numbers