Engine dilema.. 318 or 360?

im running a stock stroke la360, stock x heads, and a mild .484 lift comp cam. for how simple th 360 is it runs great!! the car has been 13.00 with 3.55 street gears at 3200 pounds. cant ask for much more with that mild of a setup with street gears and pump 93. for you, i would either drop the 360 in beat the balls off it till something breaks, than pull it out and run the 318 while building up the 360 for more horsepower. orrrrr like said above, drop in the 318 and do work to the 360 slowly as money comes in.