I was at Abileene Machine(kansas) today, they had a 72 with RWA and tires on it. Tires and rims are next larger size than 52 set up, looked to be adjustable axle width, not sure about 72 swivel tube size verses 52 tubes size, if the same outside diameter and thicker wall may work ok. Hoses and all looked complete, hadnt been robbed yet. The machine had 6" front wheel spacers complete with long bolts on it if you need to set yours out. Good luck