stealth in a excel/wide body?

Thanks guys - very important info you are giving me! How much would a back up camera cost and how do I get one installed? Also - I agree that I dont think they look very "stealthy" compared to the roadtrek with the air conditioning vent on top - I was thinking of having it painted one color so as to not have the decals anymore on there as a dead give away. Perhaps that would help? I'm not sure how tall the one I'm looking at is - but I dont care much about fast food ( I'm gluten intolerant ) - just trying to get through tunnels while driving cross country but i'm sure that's not a problem since huge tractor trailers drive through them.

Any other thoughts on the 2000 PW Excel TD?