Thank you S4gunn for the mustang routing link.
When I got the stock belt on, I realized I may have missed a way to try the shorter bypass belt. I will run stock for a few miles to see if the alternator noise stays gone since I have it this way already. Then go back and try the bypass again.
This may have been the thread where I got Rayo's routing diagram but alas, his photos seem to victims of Photobucket like mine.
1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.