I've always found that when you have a modified rig of any kind you seek out the shops in your area that have a reputation for working on similar vehicles and turning out high quality work. It's also better in most cases to take a rig to a shop that specializes in what you are taking it in for when it comes to muffler work or front end work. That said, having done front end work in a previous life for a number of years aligning a MII or Pinto front end can be a royal pain in the **** if you haven't done a few of them and if you don't have a couple of tools that make the job easier. Unlike a lot of cars and trucks that use shims or eccentric cams to move the control arms in and out you have to loosen the bolts that hold the control arm, move it, tighten the bolt and check the readings and probably do it again several times before you get it spot on. And I don't care what anyone says it doesn't make a damned bit of difference how far the settings are off when the car/truck hits the front end rack as long as there is enough room for adjustment to move things around. I've had guys roll cars in that were so far out that they were hard to get on the rack but they lined up great in the end