I have an FJ60 that I would like to retrofit with three-point belats from an 89 FJ62. I have the belts and my truck has the threaded upper mounting hold. The bottom mounting point is clearly marked on the brown wheel well cover. I know I will have to do a bit of cutting to mount the tensioner. Any thoughts? Also, the belt has retreated into tensioner, and I can't relieve the tension to pull the belt to complete the mount. Any advice on this issue? I'm reluctant to open the tensioner housing unless I absolutely have to. I'm more than a rookie here! Thanks in advance.