I've built a few hemis using indy blocks for other people. The trouble i see with all of the indy aluminum water blocks is that the cylinders move around dramatically above 1000 hp. Every one of them ive done, has done it, killing power. Like thats the power limiter..make 1200 and watch the numbers fall as you run it. I don't think they're going to fly apart, but the cylinders do not stay round. KB is a different story entirely, at least the old ones. Haven't been able to do a new one yet.

Indy is made from white glue and wood chips.