68 Cuda 383 vs a 360

It seems there is a tight spot when BB something. On my long gone 65 lemans with a 455, it was getting to the header bolts. On this 67 383 fastback its the #6 plug. You can get really good power out of a SB, so if its a cruiser/streeter and you dont care about the WOW factor, do it up with a hot SB and call it good. This car came with a BB from the PO so I didnt fight it, that is whats in it. BUT it is not a numbers car, its just what was in the boxes and boxes and boxes of stuff that came in on a trailer. I got an early 90s LA motor that Im gonna low buck n run ......in something around here. I wouldnt discount a BB because of the #6 plug, I might for the weight factor, but that can be somewhat overcome as well. Its really doing an evaluation of soul....isnt it?