Are the frame widths between the MTVR and the 900 series close or the same? Has anyone here swapped the independent tandem axles from the MTVR onto the 900 series? I am looking at this for several reasons axle ratio, locker, 7ton vs 5 ton, better CTIS???, rear steering???, space to run chains between 16.00 tires and 16" of suspension. If the frames are close and the sub frame could be attached or welded in place to the 900 series frame I could see this as a very attractive modification. Items to consider here would also be frame height to tire center-line would it be higher or lower. Also since the units are sub assemblies for the tandem axles they could be spaced to custom needs or additional units like three rear axles added to say a M927. Anyone have measurements of the front frame width and rear of each?