Man, I don't know your skills, and I'm not trying to come off as a Beavis...
I'd be very wary of this pickup, A LOT has obviously been done to it!!! Who knows if all or any of the modifications have been done properly??? If it's got front drum brakes, that's definitely not a plus..........
Even though it's 6 lug, which would indicate it's got an older frame,
I wonder if it has front disc brakes???????????? You need to find out!!!
Several companies make 6 lug conversion disc brake setups, to avoid having to convert front to 5 lug disc AND then having to convert rear also...