Magnum gurus needed

Do not remember the size of the belt. It is one of those things that you run a string around, take to the parts store and get one that size.
After trying that one you will need to do it a few more times to get it right. Use the factory 5.9 tensioner.
Since I run a underdrive pulley on the water pump, even if I found a number it would not be the same for a stock Magnum set up. Pulleys and bracketry is the same I had on my 1999 Dak R/T. except for the Power steering. It was a separate bracket.