I was going to do the same thing but it wouldn't work with the Dipricols. Their faces are recessed about 1/4" to 3/8 into the gage and I couldn't see most of the gages from the drivers seat (I'm 5'10"). I'm returning them and installing a single pillar mounted Westach to monitor boost and pyro.
Also a warning about the Dipricols, Their backlighting IS NOT the same color as our factory gages - its very green.