Anyone know if there is a serpentine belt tensioner available for our old mopar? Need one for my 511. I replaced my 17" flexilite fan for a 19" fan. The bigger fan grabs so much air that when I rev the engine the belts squeaks and I have i the belt as tight as I dare. Fan works great for cooling as i took a ride and 160* was the most temp as it would get. This is with a block filled 3" within the deck. Thanks