Another interesting option would be to make it a "Trans-Am" tribute if you like that look.
Possibly paint it the same color as the '69 Penske/Sunoco car w/ some yellow Minilite's and the yellow wheelwell pinstripes?
In that case I think that hanging the Z emblems on it would be an enhancement.
Leaving off the raceday numbers/lettering/decals would give that "Where have I seen that?" effect at a show.
I did a quick photoshop of the idea:
