7MGTE on the w58?
 

simple Q, the 7mgte will bolt right up to the w58 tranny with out any problems right, same pattern?

I know its not recomended but ive read some guys have been doing it and have over 300 at the wheels!! and dont baby it.

Bolts up no problem. I think it only holds about 300 hp. Maybe 400. Not sure its been a while since i last saw it. So ur buddies trannys arent going to be runnin much longer lol.