rearend

Does anyone know if the Gen 1 FJR rearend bolts up to a Gen 1 Max and what is the ratio difference between the two. Is the FJR taller like the Venture is. I believe the Gen 1 max is a 3.66 and Venture is a 3.33, but don`t know about the Gen 1 FJR. I am thinking the Gen 2 FJR came out in 07.