Holley 750cfm Dual Feed

Is the 750 a double pumper carb or vacuum secondaries?....got pics?? I have a edelbrock carb 1405 1769 performer series carb, think it's a 500 or 600 or 650 cfm..not sure have to look it up. It's in good shape but probably needs a rebuild kit due to being on the shelf for awhile..I have pics if you are interested, if so shoot me a PM :glasses7: