I did ask paul and pablo and got two different answers, paul wants it short and pablo wants it long....
Im thinking the muffler would have less tendency to melt down the farther back I can get it so right next to my fuel cell is bout the only place big enough to put one of those two 2 inch in and two 2 inch out corvette muffs, but ill have to shield the cell from the heat.. that way i can run two 2 inch pipes from the housing all the way to the back bumper, what do ya think?