Wanted: Holley 4777 650 double pumper
Would you be interested in a brand new baseplate? It has 172 and 173 throttle blades. Several of the double pumpers use the same baseplate with the venturis making the cfm differences.
I also have a used 4777 650. Baseplate is good but you can feel some shaft wear. Ran fine last time used but needs a rebuild.
If interested in either, PM your email and I can send pics & more info.