Which swithc would be the most complicated? My car was originally an M6, and I'm wanting to do something to go more street friendly, so would going to M6 be a big hassle or would going to the 4l80e/4l60e be harder to do?

 

are you worried about keeping your drag performance and improving street manners?
if you want the bestof both worlds i would suggest a 4L80E. you get the overdrive and still keep all the advantages of an auto at launch. your factory ECM can be set up to control the 4L80E just like it was stock too, jsut need to run a few wires.
HPTuners sets people up with the modified operating system to make the move to the electronic overdrive for a credit or two.

 

i want a fast street car, and the way it sets right now it feels more like a slow race car, does that make any sense at all? i'm going to have to go back to regular exhaust (y-pipe and normal cat back b/c it's too loud for my new neighborhood, i dont want to be "that guy" who wakes everyone up in the morning.

 

i'm also thinkin 'bout yankin out the trex and going to something a lil more streetable with a nice thump,