Better gauges in a stock cluster?

Has anyone tried to mount a set of aftermarket gauges behind the face of a non-Rallye dash cluster? I would like to have mine either refreshed of upgraded, and was wondering if anyone had tried this before.

Depends on "what" cluster..........The Darts would be pretty hard to easily modify. There are, and were, here and there, some aftermarket panels available, and there's been members here who've built them.