My GF's Duster 360 is slow as hell !!!

I say more gear and a Holley 750. Maybe its just me but I never had in luck with eddy carbs. I run the exact cam and engine with a dual plane performer with 750 HP(four speed trans) and have a heck of time getting the tires to hook. My gears are 3.55 with 275/60/15s.