650 or 750 Edelbrock on 340

My dream engine has always been to build a blueprinted 71 340 using the 68 4 speed camshaft. Stock cast iron intake, Thermoquad and all. Maybe hang a set of good headers off it. A body, 4 speed with 3.91s.
I have the 68' 4-speed cam in my 69' 4-speed Dart. It runs well, with a nice thump. Don't forget the Thermoquad carb needs the later intake, as a 71'. I had the 3.91 and sold it but went back to the 3.23 as a street driver. It all depends on what you are looking for in a application. No maybe on the headers, do it. It's all in the package.