do I seriously have to pull the motor.. or the heads to drill 2 more holes in the heads to install the headers?? its a 67 firebird with a 70 350 in it...there are only 4 bolts in the manifolds.. anyone heard of this?

very common from 70 to 74

there are companies that make header attachment brackets for that problem

no use trying to drill holes - there is nothing to drill in to

any thoughts where to even look? I tried summit and found nothing... whats everyone using???

will these work? https://www.opgi.com/gto/G240117/

it says they are for a different head but the right year and look like they will line up... I have the 7h1 heads... anyone on here try them?? of have 7h1 heads and find headers that work.... thanks

7k3 and 7h1 heads are basically exactly the same (from 1972) so they will work perfectly

I've used a similar set but they were a thicker gauge metal. Worked fine.

do they sit between the header and the head or on the outside? did you use the same gasket? sealer? thanks

they worked perfect on my 7h1 heads... nice call! thanks

No problem. That's what we're all here for.