I,ve read were you can grind out the center holes.
If it,s not an aluminum manifold I would get a new
one. You will have to use the fywheel on the 91
or get an 87 up flywheel. You wiil need a dist.
with vacuum advance. smile

They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum