If you have a NA vehicle and want to supercharge/turbocharge it and it has over 100k miles on the motor, you may wanna consider a rebuilt with stronger internals. Most vehicles aren't built to handle somebody just throwing a supercharger/turbocharger on them. I mean, you might be able to get away with it for a little bit, but eventually the motor will crap out on you. If you want a supercharged/turbocharged vechicle, you are best off just buying one and modifying it from there. You will have a lot of time and money invested in doing this with your current vehicle.