360 or 440 in my 68 Cuda?

You will have to be the judge of what you want in the end, but the bigblock will ultimately be the fastest in the long run. A "built" 440 punched out to 493 inchs, with stock Eddy heads and a good chassis combo will run low elevens all day long and not break a sweat. Then add a little gas, or in my case, go crazy, and you too can run 8s!!