Yes, I think so. The holes on the stop sign are exactly 15/16". The old reflectors are 1" across the back, and the reflector part is slightly raised and is about 15/16". So the back of the reflector has a slight "lip" and the reflector part sits in the hole. The lip keeps the reflector positioned. THANK YOU.I will send a PM with my ph# here in San Diego and maybe we can discuss..Thx again!