I am around three ProFlites (two from A1 one from Joels,) and all of them are stock case, its the only option. FWIW they are used in cars with over 1000hp and so far knock on wood no issues. As for adapting them to other applications there are a few ways. I like the A1 adapter best myself. There was a truck pull guy working on an aftermarket case but it was HUGE and heavy not sure if it ever came to fruition.