I took my R/T today to SS Performance for the dyno test. The best numbers were 171.6 hp at 6,000 rpm. And 185.9 ft-lb torq at 4,300 rpm. The owner at SS said every time the car shifted it lost about 25 to 30 hp. So the graph was up and down between every shift. He said he had never seen such a big change between shifts before. He said the motor seems to be making good hp,but the tranny sucks. He said he has dynoed 300Ms before and they dynoed around 145 to 155 hp. they were no mods but drop in KNs. He said the Mods i did helped about 20hp. He said he heard about a black 300M in the twin citys that has 100hp shot NOS. But he has a least droped the tranny once. He said a big way to save our trannys is no down shifting very hard on auto trannys. Power braking under 3,000 rpms or not at all.