Joe and Denny -
Denny's photos showed the original bolts, but the mount is for his 3604, not for your 3104. The 3104 mount has the two braces at the top. The 3604/3804 mount has the two braces at the bottom. I don't know the difference between Rail Assemblies #3705613/3705614 for narrow tires and #3705615/3705616 for wide tires on the 3104 and 3604/3804 trucks shown in the FAM.
> 3104 FAM> 3604/3804 FAM> My 3104 (1) - configured for 6.50X16 tire> My 3104 (2)FWIW, my spare touches the fender. LT 215/85R-16. Originally had 6.50X16 (heavy duty rear spring)
> My 3104 side mount spare- Lonnie