Really pay attention to his work. The guy i bought mine from did his own work on it and the welds looked like a 2 year old did it with flux core wire. I got in contact with him on streetsourcemag.com and he was asking about if he thinks people would want control arms.
When I talked to him last he wanted to make them out of square tubing, cut the angle in with a chop saw and weld the 2 pieces together. His work was bad enough that it was easier to make a whole new frame, cut the whole floor, firewall, and rear wall out of the cab, strip the old a-arms of their bag plates and remake everything (reason i havent updated in awhile).
It might not be the same guy, and I hate slamming someone elses work like that, but just watch out man