What a Guy, you are correct young man, it is real close to the Richardson border
It has been a while, but I have eaten at the one on Custer Rd. in Richardson also, friends of ours are part owners in the ice cream store Sweet Firefly next to them.
I should have gotten a picture of my wife's meal, it was very tasty. Cannot find the dish on the menu but it was 3 cheese enchiladas on a bed of Mexican rice with a cream sauce lots of cheese and strips of sausage that looked like bologna.