which carb?

[k5redneck33]

i just cant figure out what carb i wanna throw on my blazer. i bought it with the 350 in it just the way it is. i hate my edelbrock carb so im wanting to get sumthing else on it. i dont really know the right size to put on on it, i know its got something done to it, it has an edelbrock torker intake manifold, double hump heads, ram horn exhaust manifolds (which i was told are pretty much as good as headers) and i believe its got a performance cam in it, cuz u can tell when its at idle. i was looking into a road demon 625, street demon 650 or a 600 holley.. right now i have my buddys holley 750, it runs good and everything, but when im driving and punch it, it cuts out hard, and it never did that with the 600 carb so im pretty sure its too big. any help?