Hi everyone. Its Mian, I am a new member so don't know much where to post this answer. This is with reference to years old query(March 23 2016) of member "My71FJ40" regarding converting a standard Toyota FJ 45 to one with dual rear wheels(DRW). Just saw it in the forum now, maybe it's an obsolete question/answer by now. Still for anyone interested I would like to say that I did such a conversation recently. It did involve mechanics and after quite some running around I was able to have a FJ 40 with a single axle dual rear wheels(DRW) after swapping the rear axle tube with that of a Toyota Dyana without altering the FJ40 chassis. Its now a fully functional 4x4 FJ 40 DRW and love this heavy duty work horse. Best regards, Mian.