I installed a Paxton setup on my son's '06. The best advice that I could give is to make sure you have a helper. There were several times when I was re-routing the various hoses and wires where a second set of hands were vital. You will find that there is very little room in the engine compartment, and squeezing in the blower parts is like wrestling alligators AND greased pigs. Just take your time, read the instructions and don't get too frustrated. Oh... Band-aids will be necessary- LOTS of sharp edges on the S197's.
Definitely worth it-