Quite a few Hot Rods are running 4 Webers. Hot Rod Lee, in my town, is running 4 Italian Webers in his 32 Highboy. There are enough of them out there that one of the ladies at "Riley's Rebuilds" is now rebuilding them.
They have the same problems with Asian knock-offs as we do. Here's a thread on Knock-offs on the Hokey-Assed Message Board: