My exhaust manifold finally cracked on 77 pickup....So I figured lets go see how the market is on aftermarket headers I went to LCE for their headers and was advised that it wouldn't fit on my truck? Any recommendations on those that have replaced their exhaust manifold with aftermarket headers?

 

I have a uncracked 20R manifold and a 22R manifold (4-2) if you're interested in just a replacement.

Im running a Flowtech header i picked up from summit racing. It seems like it was built good

 

PO put a Hedman header, from Summit, on my truck. Seems to work, flange just barely clears the steering box area but does fit. My truck is a pre-smog, so dunno if that will make a difference for you being in CA as well.