I know a 4.8/5.3 block can be bored safely to a 3.900 or 03.Can a 5.7 l block be bored more or is that it/i know its prob a dumb question,but i have an extra block ready to go(4.8/5.3) but if i can get any more out of a 5.7 block ill bore that.Also any clearence issues to using a 4" crank on the 4.8 bored to a 5.7?