Cdaniel
Undocumented Mechanic-I Am Not CDAN
I'm curious where you got the information referring to the diameter. I haven't seen anything on Dormans site or elsewhere that states the diameter. The ones that I got from them without the bracket are 2 inch and supposedly for Corvette too, just later model.

A few more pics of the stuff that UPS brought me tonight. The manifold is one of the Dorman ram horn manifolds from China. The price was right, and it is one of the 2.5" models used on Corvettes. It looks like I will have to cut off the end to make it fit with the serpentine setup I will be using.