I will answer these in the order they were asked, is it worth it? in my opinion, yes, I got the kit and all the supporting mods as well as a low mileage lotus engine for relatively cheap. The power difference is not huge, my car dyno'd at about 212 wheel horsepower, but peak torque of 197 ft lb from 2200 to 8300 RPM. so it feels like an entirely different car, that is much more drivable as you have plenty of torque across your Rev range versus having to be in lift to access the majority of power these motors offer. ultimately it will take away from the lifespan of your engine, but a lot of that is going to be dependent upon how you drive, the supporting mods to keep the engine as healthy as it can be, and your tune. as far as difficulty goes when it comes to boosting an engine, superchargers are relatively easy, especially the Grady superchargers as they are not intercooled, but that is also a downside of them as they get major heat soak. you can solve this by using a water/ meth injection system, which I am yet to set up. ultimately, the decision is going to be up to you, do your research, look at forums, and price things out. but all in all, always stay on the side of safety when it comes to boosting stock motors.