Can sombody that has swapped the original t/c for a mark t/c tell me what kind of differences they found from switching. (stall speed and time diff.). cause i don't wanna spend the $ for this converter and then not really help me out too much. if there is a better converter that i can get withought needing to do any other mods just to use the converter i would really appriciate it if you could fill me in on what they could be and what kind of gains i could expect. thanks for all the help.