OK... I have a stupid question. I really am at a loss on finding the center of the firewall in relation to the cowl. No problem on compensating for side thrust. comes out to almost 1/4 inch offset. My problem is the vertical c/l. I tried a plumb bob and string with the cowl on but that is bush league, and not very accurate. Any one have a dimension for the vertical dimension? Firewall is in stock position. I am thinking of cutting the cowl first (clearance for the valve covers) I am using a Hyde A mount, which should make things a little easier. I can thrash away for a while, but if I have a dimension to baseline the mount with, it would be MUCH eaiser.

Thanks,
CC