Keep the NNBS. A 4.8 vs 408 are going to leave you wanting very very different intake manifolds.

 

Definitely some stout numbers man! Definitely want to see what she does when it's not out of injector. If ya don't mind me asking what's the specs on the truck? And gamble I couldn't pass it up for 300 bucks. With my displacement I'll probably lose some tq but whether I use it now or later it will come in handy when I throw a set of rods and go to a big inch lsx