what should my next mods be?

[eggman1345]

hey, I'm getting a new 420a motor (rebuilt), i have a header and a cold air intake, what should i have ported on the motor before i have it sent to me, and what would i want my next mods to be?

 

[jaredgsx]

http://dsmtuners.com/tuning-guide/2gnt/ <- best way you can go