Type RH-5 is the "widow maker", every other style shown, I think any truck place will work on.
John Gott
Now I have to look again, I believe that mine are widow makers. They have a raised center band ( appear to be 2 pice not three ) made by firestone 20x6.0 and now you mention it the RH-5 rings a bell but I'm not shure??? I 'll have to check tomorow. If it does say RH-5 then I'm definitely screwed right???