Do you mean this oneThere was a guy in our club that was doing a polo cluster swap that looked like a TT gauge...but not TT dash.
Betteroffdead is the guy - he sold his 98 when the new forum started up so his old thread is gone, but I finally found him on Vortex - so you might try to message him there. He said his dad was an electrical genius - but he might be able to tell you about the fit.
Lots of good progress install pics...
God I loved this car....I should have bought it!
Thread here > http://newbeetle.org/forums/photos-new-beetles/24450-2002-glx-platinum-grey-5.html