351W's come stock with 3" mains, and FRPP/SVO as well as Dart have 351W blocks with 2.75" mains. If you'd like to show me this magical 2.25" main, 9.5" deck height block, I'd be amazed.
PS, please post pictures of your made up twin turbo 78 cobra with a 302 crank in your 351W block, with...