Call me crazy but maybe you could get some gauge pods (driver's and customize one for the passenger's side) and install them in there. It would cool and be pretty functional too. Probably be the only one like it.
Jonnie
98 Zetec Contour SE
Sony XPlod CDX-CA900X HU
Sony XPlod XM-2150GSX amp with JBL 8" Sub
(Not much so far but workin' on it)