What is the reason for changing to an aftermarket intake manifold (upper and/or lower)? I am collecting parts for my new engine which will remain unopened and with a 7670 and shoot for a conservative 330-350whp for reliability prioritized over power. If there is no point in changing it then I'll stick with stock IMs.

 

If you only want up to 350hp you'll be totally fine with stock intake manifolds.

 

For what the OP is doing, I'd just stick with the stock FD manifold & throttle body.

 

The stock intake is perfectly fine for your power goals. The main reason(s) is consider swapping to an aftermarket setup (I'm running the pro jay sniper intake) is if you plan on big boost/power and you want to swap to a dbw setup.

If you want to bling out the stock UIM/LIM then I'd suggest contacting rotorsport racing. They can enlarge your throttlebody and extrude hone your UIM/LIM for increased flow and evening out the front/rear delivery.

 

thanks all, I'll just have my oem one cerakoted or something