I think you'll find the install to be a snap. The extraction of the old power steering box will be the headache. There's nothing complex about it but it is a bit of a puzzle to clear everything. At least, that was my experience.
Assuming you have a V8, I would strongly urge you to pull the driver's side manifold/header and be prepared to unbolt the motor mount and jack the engine up a few degrees.
Also, be sure to plug the fluid entry/exit points or you're going to spill fluid all over the place.