I posted this on Ls1tech but I figured I would have more luck here, so forgive me for this being my first post!!
I have one of the older side mount style magnacharger kits for trucks. The kit came off of an 02 Denali. I am not sure of the exact mileage. We got the car in at the dealership I work at and the person who purchased the car from us wanted the engine returned to stock. It ran very strong and the truck had 45k miles so I know the S/C kit has no more than that many miles. Like I said it is the side mount kit so it is perfect for running an air to air intercooler if you decided to do so. This is a complete ready to install kit minus upgraded injectors and a belt. Also you will need a tuner as the superchips programmer that was with the car was VIN specific. I will include a few pics showing everything it comes with. Price is $2200 OBO and I am located in North Carolina. Thanks for the interest.