Yes, MTM can change Kit # values on SDS7. But, you'll need to make/find a 10pin - 10pin cable to run from MTM to SDS7. I'll try and hook up an SDS7 this weekend to make a video so you can see and hear how changing Kit # values while playing affects the sound.
Also, if anyone is interested in MTM to SDS7 cables, hit me up. If there is sufficient interest I'd be happy to make some.
Ed