76 Duster A/C removal

I'm wanting to remove the remainder my A/C system and put in Non A/C, I have read a few articles on here about guys doing it, and was wondering if anyone had any advice or tips for me. Currently I'm missing the lover vent, the lines under the hood, compressor and brackets, and condensor....so basically I believe all I need is the non A/C heater box and new controls, and to build a new bracket for the blower motor to mount on the firewall.....I think......
will all years of dusters/Abody's interchange?
any info/parts/advice will help