Ok, I have an intake and a header, I obviously want to finish up with a dowpipe and an exhaust. What size dowpipe should I go with if I haven't decided on an exhaust yet? I am juggling in between a 2.5 custom exhaust or a gmpp exhaust. So should the outlet on my dp be 2.5???? I would hate to decide on an exhaust later only to find out that it wont bolt up to my dp. Or....should i just wait to do both of those at the same time and do the gm dual pass endplate?????

mods: gm stg 2 w/ 2.9 pulley, k&n typhoon intake, zzp shorty header, ingalls torque dampener, and a b&m sts. No driver mod lol

 

dp, then exhaust. bc the dp is cheaper and really restrictive, well so it the exhaust. lol