Alignments...

What do you guys think of an alignment shop on wheels, where the guy comes to your house and does the alignment on his trailer? I've talked to him on the phone, and he did my buddy's race car, and my buddy was pleased. The majority of his work is auto body shops, where the shop calls him to go there to do the alignment on the vehicles at the body shop. He seemed like he knew what he was talking about and is familiar with classic cars.

Also, I talked to an alignment shop in my hometown, and he says he is also familiar with the mopar torsion bar suspension, and does classic cars every now and then...But of course, most of the his customers is modern day stuff...So, who do you guys suggest? Shop on wheels alignment where they guy goes to my house, or tow my car to the shop to get it done?