the pre-1964 Americans came with a 1.25" pipe, all the way to the back. looks like a soda straw. the 195.6 six, usually flathead. there was one at a U-Pull-It in Sun Valley CA a few years back, i almost saved it, as it was the optional porcelain version -- blue porcelain inside and out (outside, at least). i had a 62 Ambassador that had the porcelain option (i sawed it in half to stick a Cherry Bomb on it -- just out of high school, seemed like a good idea (was not). looked like vintage kitchen ware! i forget what the Ambo had but it wasn't that strangled (the Nash-designed 327ci V8).
