I spun a crank bearing in my 400 SB. The 400 was the orginal engine, only mods are Edlebrock carb and points replaced with Petronix. A good friend is selling his 1968 bored out 30 over 427 BB. It puts out around 500hp 550 ftlbs of torqe . I know the engine mounts will fit the BB and that it will bolt right up to the 400 tranny. He's giving it to me at a great price if I want it. I'm lookoing for input and ideas on the swap and any upgrades if needed.