that guy had us work on his car. wanted '00 Cobra R lowering springs jus in the REAR of the car, said it would help with wheel hop and wouldn't take any of our advice. few weeks later i heard he broke a half shaft.
u don't have to get the idler pulley, jus get a shorter belt and bypass, i think it's a 77 or 76 inch belt, i think i have one on the shelf too. i went shorter and got rid of my a/c too