The original Porsche 917 had a naturally assperated V-12 at about 716 horses if i remeber my numbers correctly and when That car was finally banned from runing the lemmans because it was far out classing any other viehical and for three years in a row took 1st and second place and two of those thre even got third place so the lemmans racing board told porsche that the 917 was no longer permited in the race so Porsche came out with the 917K witch was the twin turbo v12 that one was once again after two or three years banned from the lemmans again and that was the last Porsche ever did any thing with the 917 model only two hundred a year were made and then given away at the lemmans the only reason Porsche ever made them was to compete in the lemmans and in order to do so your car had to be considered a production car which at the time meant two hundred or more of them were built a year this car was never meant to be sold to the general public. But she is a beauty and a beast not many cars even to day could beat her either one 917 or the 917k. unfortunately the most you'll ever see of that car is a kit but there still fun.