349 CI on the cheap

OK, I'm lost here, and I mean no offense to anybody, but why spend extra to give up displacement. Sure BJR's combo should work, but if I had a 318 and 360 core motor sitting on my shop floor, I would be inclined to use the 360 block and put the money saved from weakening the crank towards some good pistons which would last longer at this power level. I guess I would have to find some other way to give up the 11 cubic inches. And then there's the issue of ending up with a 350. If I wanted to have a 350...