[Eagledriver]

Shops that build engines will not build a mag case without align boring it because they don't want to take the chance on it. And probably they are right about most of them being warped. Since you are doing the work yourself it's up to you if you want to try to get away without the align bore. It's really up to you if you want to try the build without splitting the case. You can see why very few people try to rebuild a mag case engine.

-Andy