sounds like a good idea i just wonder how easy the other parts are to get hold of like the airhorn gasket and such. good basic performance carb. but with a bit less tunability since i wouldn't think there isn't any type of metering plate right?
From what I remember about the Holley unit I had, all parts were from the Holley parts bin and easy to get. It use's all the same parts as any other Holley carb except the air horn gasket.
When I had my 4011 / 650 spreadbore, I needed a gasket and picked it up without a problem. You can also purchase a roll of gasket material and make your own.