Be patient on the ls6 intake you can also find ls2's dirt cheap as well but those need some porting to Hang with the ls6 . keep in mind you can always use your ls4 throttle body which matches the ls1/6 diameter and all you'd need is a custom throttle body adapter. Which would be a more cost effective solution depending on your resources. I chose the ls2 tb because I knew eventually I'd want more headroom for future mods