Big block headpipe gaskets

[Mytur Binsdirti]

Are these gaskets for the hipo manifolds or the standard manifolds?   

Thanks in advance.   

[b5blue]

FelPro 60025 Fits my 69 vintage HP manifolds nicely. (compare spec's.) 

[ws23rt]

Those gaskets look to be too small for the HP manifold.

I measured one of my spare  HP manifolds and the bolt hole center to center is 3 7/8"  The center hole dia. is 2 3/8"