well my new tensioner, idler pulley on the tensioner and the pulley off of the tensioner are doing a good job. i used a 1090k6 belt and its working perfectly.
im currently at the exhaust shop getting custom 3" exhaust put on with 3bolt flanges added to the LTs and Y pipe, hes gonna put a 02 style Y pipe coupling on it so i can change the exhaust or pull down the y pipe alone.
so exhaust consists of 1 3/4" LTs into 3" y pipe into a 3" SI/SO 22 or 24" magnaflow (cant remember) turned down by the axle
the bad thing is you wont hear the cam but it does make it the perfect sleeper imo
2008 GMC CCSB 6.2/6L80e swap
Gen IV 5.3/60e swap 1994 ecsb W/T