I have an 85 brnnco that i recently purchased and i am having all kinds of problems with the belts. Every time i get into a little water on the trails my power steering belt will fall off. I make sure it is tight and have no problems till it gets wet, and i have to do alot of manuevering. In all actuallity i would much rather have a serpentine belt. Is this possible with the older 4.9 straght six's????