Body mounting the front coupler is easy, as MT made a conversion kit for it. If the two trucks are the same, and it's the rear that's broken, move the unbroken front to the rear, and body mount the front, if you want a body mounted coupler. However, you'd probably have to order it from MT, and with shipping, it might not be cost effective.
Since Clint has offered a replacement part, that would certainly be the easiest solution!
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Correction: Peteski's comment below is right. The front coupler CAME body mounted, so there is no front pocket to move to the rear. The MT adapter kit is to convert a body mounted Rapido, not designed to accept a knuckle coupler, to a standard MT coupler.
It's been so long since I converted mine that I was thinking the front pilot was truck mounted, like on the original 1960s PA1.