Russ,
I put a Vortech in my FFR. Installation is a bit trickey, but do-able. The performance gains are great. If you do it correctly, you can still put a supercharger on a high mile motor. My motor has quite a few miles on it, and its still together, even with the blower. The worst thing could be....You might need a new motor, one that makes more power, looks great and has new parts.
Just do it and drive it till it blows! That's what I am doing. The supercharger can always be put on another engine.