Got my 2013 RT Classic (I think) about a week ago. I had a ‘73 Challenger about 25 years ago that I had a lot of fun with. It’s been rainy since I bought it and just got a chance to clean it up good. I think it may have a tune in it but I’m not positive. It detonated a time or two right after I bought it but hasn’t since I filled it up with super. The skip shift has been eliminated and I don’t think it’s cutting cylinders at light loads. Wiring at the trans looks stock. The rear mufflers have been removed and it’s loud. A bit too loud, actually. The wheels are staggered Niches and it has 315/35s on the back. Needless to say it hooks pretty decently. I’m really impressed with the ride and handling although the steering is a little easy. I’m already contemplating a 6.4 cam for the summer. Just a bit worried that it will kill a little off idle power making starts a bit harder during everyday driving.