John;
Not a very good picture, but at least it gives you an idea of what the vehicle looked like with the derrick deployed.
Some body details: - steel, special engineer's type, tubular superstructure, tarpaulin, hinged sides, tool lockers, two rear jacks to support body against down thrust, equipment includes 3 dismountable derrick legs maximum length 45 ft, winch driven from power take-off, 200ft ½ inch cable, maximum lift 4500 lbs.
Cheers