Power brakes??

I had the original booster from the 68 when the 340 was in it. A raised, 10.5 inch I think. Original style mounting.
And for info, the engine hits the blower motor on the right side, so I was thinking the mounts were making the engine higher, that would give me less clearance on the driver side as well.

Yeah that's the one, the 340 one with the bellcrank linkage!That's the smallest, most offset, OEM booster arrangement, I have seen.It's not real happy with low vacuum engines.