i have a ported and polished intake manifold that i had on my ls engine i think i want to use on my b16 so can it be done is it goin to hurt my power at all if i gain a little then ill do it but if i lose numbers then it will be no go. i figured i would cause of the longer runners for low end torque and the bigger portin for the top end am i correct.

 

port entry angles are a little different, port size as so is bolt pattern...
sell it and get a pr3 manifold; i highly doubt you'll make power with a p75 manifold

 

second that

 

its a b16 gen1 and its a 90 ls i think its a pr4 manifold

 

does't fit