Better tensioners/ idler pulleys

hi navery; for those with tractor supply co. or dels tractor. they have a rubber roller tensioner and spring in their go cart section---#165-063 and #165-280 mitch
lol yes i tried that, ended up bending the arm, they didn't have the spring so i modified it and that possibly sabatoged it for me. i'm going to try and bend it back
Would a tensioner off of a ford or chevy work? Theyre tough as nails and could be found on the cheap at a junk yard. Theres a 100 different kinds out there.......if a smaller one is needed look at some older fwd cars.