225 slant 6 or 360 v8

Okay guys so i have a 1969 dodge dart. It has the stock 225 /6 in it now with a 2bbl intake and carb and electronic ignition. I would like more power. i would like this car to be close to getting in the 14s (or faster).
My question is would you rather put a 4bbl 500cfm carb with a big cam and headers and oversized valves ported head and 10:1 cr. or build a mild 360 magnum with magnum eq heads and a mild cam. now i am already in the process of buying a 3.23 8 3/4 rear end. But if a get a v8 i will have to buy the engine along with all of its parts, a new k member, a new radiator, motor mounts, a 727 trans, plus a new distributer and all the little stuff. now i know that either route is expensive but what would you guys rather do? a 250-300hp slant or a 300-400hp 360 but much more pricey?