what gians could i expect from porting the upper and lower intake manifolds to match with the SLP runners? its a 350 motor with speed density

 

porting the plenum is manditory to get anything really out of slps, 2nd would be a little work on the runners themselves. personally i dont think i am going to waste time porting my manifold and go straight to a superram. but just from the plenum and runners is a nice gain. i am trying to get into the dyno sometime this week, i can go sunday for sure but i am trying to go during the week this week.