How are the manifolds held on? Is it only by those clamps? If so, why would the headers come with bolts? If there is a difference between the thickness of the two, how would I modify the clamps? Sorry for all the questions, but I'm doing an engine swap and would like to install headers while I'm at it. Thanks in advance.


'68 C-10 - 250 with Edelbrock 600cfm 4 barrel, Offy intake, Hedman headers and true duals, HEI, MSD 6A box, relocated gas tank
Soon to have: T-5 tranny