Hmm I think we got to communicate realistic expectations here. Pretty much all the "golden" MT-32 games use custom maps and sound effects. Sierra, Origin, Dynamix for example. They will sound totally off and you're better off using a Sound Blaster.
If you go out an invest into a General MIDI device for the purpose of using it with MT-32 games in mind, I got to say, you will likely be very disappointed.
Just fire up a stock standard DOSBox and play some MT-32 games through the Windows General MIDI device, you'll hear it.
IMO there is no substitute, the closest alternative is, as mentioned already, running the Munt MT-32 emulator on a second computer. That will give a pretty much indistinguishable experience.