Holley 650cfm double pumper carb. List 4777-7 with manual choke. I went through it with new gaskets and such. Has a new secondary bowl since the original one had stripped inlet threads. I just pulled it from my motor, but will probably need to be tuned for your needs. I decided to go a different route and stay with a vacuum secondary carb for my needs.
Asking $250.00 plus the ride.