Carb help?

Hey fabo! I've been looking for carbs locally for the truck, wanted a 600 or 650 holley. Found this on facebook, from what i can tell its a double pumper (noob here), guy said its either a 600 or 650. Not quite sure what to look for in these pics so I thought id see what you guys think. He wants $60 Screenshot_2017-12-13-18-32-20.png Screenshot_2017-12-13-18-32-10.pngTIA!