This is from
Momar EFI , marketed by
S&S Automotive , here in Colorado. The computer is from
Haltech , which is an Australian company.
The throttle bodies are billit alum, and more closely match the dimensions of the Webers. Billit alum doesn't change shape when hot; cast bodies sometimes can do that. It is more expensive than others.
Another excellent source is Wayne Presley at
Very Cool Parts He's in AZ. The throttle bodies are cast, and much smaller. He uses a differant computer system, which sound likes it's much better than Haltech.
Regardless of who you get the stacks from, get Wayne's manifold. Head shoulders above any other I'v come across.