nnbs intake manifold swap

[kbomhower]

im kinda confused on what im gonna need to complete this swap and what years exactly work. i have a 99 lq4 and im just wondering what year manifold to order... and off from a 2500 hd or a 1500?? and do i get the stock throttle body to go with it or buy a aftermarket one?? also anything else i will need to make it work?? i have a 99 sierra nbs
Thanks for the help!!

[03silverado]

http://www.performancetrucks.net/for...-5-3-a-512894/

hope this helps you

[bstill]

If you still have cathedral port heads, you'll need one off a tbss or gen IV 5.3/4.8. If your throttle body is drive by cable, you'll need an aftermarket throttle body since gen IVs are drive by wire.