[Ted7rns]

Rule 23.2 in the 2009 Spec Focus Rules states:

Gauges be added, replaced, or removed. They may be installed in the original instrument(s) location using a mounting plate(s) or any other location using a secure method of attachment.

Other than modifications made to mount instruments and provide for roll cage installation, the instrument panel/dash substrate / plastic main structure must remain complete.

So no, you can't up the dash... and I strongly recommend you keep the thick bar behind the dash, That is a safety item.