Despite how bullet proof the bottom end of a KA is, just because there have been 500+ whp KA’s on stock blocks doesn’t mean anything. It’s luck, and if it runs, awesome. But it’s sooo cheap to build a KA. Sure, it’s also cheap to just buy another KA when the current one blows. By building you get something that isn’t going to crap out on you in less than a season, and something that you can have more fun with