Alterkation front and rear, both work great and you can put the car back to stock if you ever want to, but once you have one you won't.
For less than half the money, the stock based suspension can be transformed to ride and handle as well as a new car using HOTCHKIS stuff. The RMS stuff is not as easily reversed as you say. Brackets have to be cut off the car to fit the front end setup. I'm sure there is some cutting, welding and drilling to fit any coil over rear setup as well.
I put my car together with a bunch of parts from independant sources, mainly because I wanted to be able to buy stuff a little at a time. I'd gladly put my car up against a Hotchkis equipped car.
