What would be the best header set up for my 3.8. I have all the parts Turbo T4, Intercooler, Blow off value. Just need headers, they have told me about Grand Prix headers. Need more feed back.

 

yeah modify any manifolds off of a fwd 3800 series engine. ive seen da manifolds from a pulled bonneville engine and the factory manifolds are tubular and even arch over the 4T60e transmission.. if they dont hit da firewall, with modifications they might be able 2 work