Yes
The VMM was optional. On non-VMM equiped cars there was a block off panel. It has the same finned appearance as the surrounding dash.
They are already scarce, because just like you, people 86 a dead VMM & replace it with the block off panel. Occassionally they do show up on E-bay though. Your best bet to find one, would be from somebody who is parting out an SC/XR-7. Supercoupeperformance sometimes have them, but they always go quickly.
68COUGAR