The TS-950SD and SDX allow tailoring the AM to at least 3100Hz wide. Its no major task to TX thru the 6KHZ AM filter and hack the DSP settings for the TX audio.
For now I TX at 3100 but can listen at 6 or 12KHz.
Carl
Those are nice passband widths. I don't know anything about the 2000; I think the 870 came out after the 950--the 950 was probably the last rig they made that was hackable. I've heard (but cannot recall details now) that around a year ago, someone at Kenwood who worked on the 950 design spilled the beans on some kind of front panel "secret menu" access that allows for extending the SSB tx bandwidth; don't know if it has any application for AM or not. The 150 w. PA probably makes it a pretty robust low power exciter for AM.