360 mopar wondering estimated HP??

When I looked back into the books the cc size for my heads is around 65 cc. The head gasket thickeness is .39 like urs. And the distributor just fits with about 3/4 inch clearance from the firewall in my truck! The truck only has 2.73 ratio in the rear end but it goes like stink. Just wasn't to sure on the compression as it burns 87 octane pretty good