I say 360... its funny 15 years ago nobody really wanted a 360. you can make a 318 quick, but lets just compair. say you bolt a 4bbl, headders, a cam ect on a 318 and stick in a set of 3:55s to get it to snap yer neck pretty well. with 14 or small 15 inch tires , you wont like hwy driving this...