I've replaced one heater core before on my brother's car, which we believed had always been non A/C. However we were forced to remove the dash to get to it. I've heard someone mention on here that with non A/C cars you can get to it through the glove box. I recently purchased a non A/C stang which also needs a heater core. Now I'm wondering whether i can get to it without removing the dash. I suspect that perhaps my brother's car at one point had an A/C. In fact when we ordered the heater core for him, we asked for non A/C, and the heater core did not match. I guess I'm just hoping that if what I heard on here is true, I might be able to remove mine without all the trouble. Can someone confirm this?