My car is similar to yours and I have a Edelbrock 650 AVS and it works well. It has a tendency to percolate the fuel after engine shutoff.
I want to reinstall my AC system and was wondering which compressor your using? Got any close up pics?
For the AC compressor its a newer sanden unit. Not sure where it came from because I didn't purchase it originally, but the brackets and such look like bouchillon I would guess the compressor came from there as well. Looks like the original setup otherwise (my car had factory AC). When I did the 360 swap I had to get a diff alternator bracket and mess with the spacing a bit to get the belt alignment perfect.
I will say this, it definitely blows ice cold. Its better than most newer cars to be honest.
Heres some photos of it on the old 318 I pulled out. You can check out the build thread I put up too for more photos: Magnum swapping the 72 Scamp!