ok got the truck back in May, just have a couple questions. i know something is done to the transmission, it shifts firmer than a stock, so i know it at least has a shift kit or something, but other than that if there anyway to tell if its stock or aftermarket? also is there any spec numbers on the turbo to tell if its stock? its a garrett but is there any way to tell if its a stocker? owner said it was never chipped. any info?