I'm 100% with Jon on using any Weber unless you have a dyno and have Weber send every possible part combination for that particular carb. We have a flow bench, and both a chassis and engine dyno and figure on 4 or 5 days to get Webers dialed in---not worth it for ANY street ride. Once set they do stay stable and work at various altitudes. On my 34 Chevy I just use the bodies for the injector look and have new electronic injectors with computer control for the actual working. Best Weber set up I've ever messed with. Here is a Weber system that has raised the Land Speed Record (LSR) every year for the last half dozen years from a former 90mph to a present 140mph with a factory Model A block engine in a 29 Coupe.
[img]https://s8.postimg.cc/esuhl1ddt/IMG_3982.jpg[/img]
