Just as a FYI, make sure you don't use too long of bolts connecting the iso rails to the pan, especially if using an aluminum pan ( your not) because you will crack into the pan boss and it will leak.
Seen it before.
Do chase the threads in the pan with a bottom tap.
The bolts should be just long enough to bottom out, going through the rail without a lock washer ( finger tight) then add the lock washer on final assy.
That way you are sure they are not too long, but long enough to get max depth/strength.
Clear as mud?
