So I am in the middle of ordering parts for the rear seatbelt conversion for my FJ60. I have the threaded holes (stoked) I know the upper rear section of the FJ62 seat will work with the FJ60 bottom section, just have to change out the latches. My question is if I wanted to remove my fabric from my upper 60 seat and install it on the 62 seat would it work? Are they the same shape, thickness, etc?