It's gonna be pretty difficult to tell if it was done right until you're able to drive it. If it's a front and rear clip job, I'd want to know where it was done and if reasonable attention was given to making everything level and square. I mean, did they do this on a couple of sawhorses in the back yard or what?

If you can get the truck to a place that is absolutely level and flat, drop a plumbbob to the ground from the same point left and right (with the same size tires and aired the same) and measure the string to see if she's tilted or not. This won't be as accurate as gettin' it on a frame machine, but you might find out pretty quick if she's botched. Check the position of the clip rails to the original rails on both sides. Do they look close to the same or not?

If they used the entire late model frame, then there isn't a whole lot they could have done wrong.