need help asap what carb for my motor 600 750?? edelbrock

eddy 750 ran great car seems like it grabbed another 100 hp lol pulls super hard ideals nice
have little more tuning and plug checking to do before i make the final call on rods and what ever else but for pretty much out of the box and 5 mins of tuning holly crap what a change runs just a tad rich at ideal but not enuff to load it up even so i may be abel to thin her done just a touch more do a run and check the plugs