372or 416 and why

sorry it would only 60 in the 1.77 range..so I may just be better off by just rebuilding my motor change cam and verta...maybe go back to a 3000 or so with the 457 gears and make sure the cam is degreed and everything on point......do you think it would be possible to run on pump gas with 185 cylinder press... the comp should be around 11.5.1 not to sure after I took the motor apart for what the shop told me it would be.....lets say that it was suppose to be 12.5.1 with 55cc heads then I find out it has 68cc heads what would the comp come out to be now?????