A/C Engine Upgrade kit for '68 Dart

OKDart said
I'm wanting to get the A/C working in my '68 Dart. I've redone everything under the dash, and have all the old components from under the hood except the compressor and mounting brackets for the compressor due to going from 273 to 440.
I emailed Classic Auto Air and they want $700 for their universal kit, the only Mopar dedicated kit is for the E body. I've also looked through Bouchillon Performance's website.
I'm looking for feedback from people who have upgraded their factory A/C car and any other options out there. I would prefer a kit with good instructions because I don't know much about A/C, I have never even charged a system before.

I have the Classic Auto Air setup and installed it myself. If you are hesitant on the charging you can always take it to a shop to get it charged. The installation instructions are great for the setup and the compressor comes already oiled.
If you want instructions on charging its really easy. The biggest hassle is putting it on a vacuum since most people don't have one readily available to them. Once its on a vacuum its as easy as adding the cans of refrigerant it will just suck them in (just make sure you don't shake the cans)