As I think others have noted part of the problem with injecting a 351W is simply finding an intake. Manufacturers seem to be losing interest in making compatible manifolds. I got my hands on a Trick Flow R combo before TFS stopped making them. The Lightning lower is insanely expensive when you can find one. Edelbrock used to make an upper/lower combo that outflowed the Trick Flow setup I have, but they stopped making those years ago. Edelbrock does still occasionally produce their Super Victor EFI manifold, which was my backup plan (and maybe I should've gone with it anyway): https://www.edelbrock.com/super-victor-efi-351w-intake-manifold-29245.html Out of stock at the moment but they do seem to be producing it still. With one of their 90 degree elbows and a throttle body of your choice, you are in business though I imagine hood clearance is still an issue. And you'll still need fuel rails, blah blah. Any EFI system that is designed for port injection will work.
