I haven't built one yet, but I like the idea of a 377. Take a 400 block, 350 crank, 5.7 rods, and stock compression height 400 pistons... and of course a good rotating assembly balance and you've got a 377. The better way to build it would be with 6" rods and aftermarket pistons, but the cool thing about it is you have no clearance issues with rods to cam, or crank to block like stroker motors. And it will rev to the moon.