Craig,
I used the Webers as well. The ones I got were replacement carbs for a BMW 2002. With regards to setting up your engine I am not sure what you mean exactly. Are you talking about how to modify the head etc?
I had my head at a machine shop to get the port divider brazed in after I drilled the wholes for the Offy and cleaned up the flash so I could mount it. I also had them straighten out the exhaust gasket mating surfaces, and do some porting. I was very pleased with the machine shop work, and like it has been mentioned here before, the guys seem to really enjoy it since its not just another Chevy 350 V-8, its something different.
Ludwig,
I did exactly what you mentioned for the fule line. I ran a hard line from the original fuel pump, around the back of the motor, put an inline clear fuel filter in, then ran the hard line again to some of those brass T looking things with compression fittings in them, and then to each carb, with the fule line terminating at the front most carb.
There is a TON more low end power in my opinion. Although I have a 3.03 three speed and the 3.20 rear end, so that helps also. The choke would go on the middle carb. I belive Slade just left the choke on the middle one of his 1100. I do not have any chokes on any of my cars, as I said I don't drive it during the winter, but if I ever did, I would just install a munaul one that runs in to the car with a pull lever.
Bill