Is the rest of the manifold ok?
Check for cracks and broken ears, very common
on the I-6, if it has cracks or is broken its not
worth the time to remove the studs, if its in good
condition otherwise then drilling the broken studs
out is most likely what you will need to do.
65 Fastback 2+2 Rangoon red, red interior
6 cyl, AT, A/C, P.S., P.B.
13" 4 lug wheels with spinner wheel covers
Previously owned Mustangs:
84 SVO,86 SVO