Knee Knocker A/C

That's the problem-factory A/C cars had a different firewall, normally guys replace the firewall when converting to factory A/C. Plus those later boxes are a different animal than the early As. I've got a '68 A/C box in my stash that I compared to when I was building the car, but wasn't close enough for me to consider. Now this is a finished (well, are they ever??) car, so no firewall replacement or major surgery. Just hoping to find a more compact underdash unit to regain some legroom. I wouldn't even bother, but the wife likes the A/C and it's her car, so... You know the rest of the story!
I bought a factory unit from a guy in Birmingham, AL. I had the same concerns about the firewall. He cut the firewall out of the donor car so i could have a pattern for the holes. I only had to drill a couple extra bolt holes and the holes for the a/c lines and the hole for the fan was bigger. I just had to open it up a little. This is on a 65 Dart. I used a condenser from Classic Air. It isn't as large as the radiator and I think it is a little on the small size. It doesn't cool as well as I'd like, but it's a convert. Probably never will cool well here in Mississippi.