Would this help?

[Nicks5.0]

yeah, you can do this, but i would say its almost not worth the trouble. id just wait till you get an aftermarket unit that doesnt have a screen in it
nick

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1990lx coupe, balanced 302, gt40p heads, wolv 1087 cam, 1.7rr's, 65mm tb, 75mm maf, comp box on top of cobra lower, anderson ford pms, full exhaust, drag type susp. and tubular front end, 3.55's. traps 105mph before some mods, look for 110mph very soon