Some of the FX16 motors are smallports . then you'd have 10.3:1 compression . Does the intake manifold say TVIS or does it have ribs on the top of it ?

Yea bills right , ITB's on a stock compressio/cammed motor is a little over kill . Get some Higher compression pistons , Megasquirt , ITB's , Header , Cams and rock out wit yer cock out .