1972 duster original a/c

I was going to go with after market AC on my '72 Scamp instead of using all the original AC components that I already have. But then I looked at the cost and all the modifications that I'd have to do so I've decided that original would be the best way to go for me. I've seen people asking $150 for a complete package deal with used original components. @Jim Kueneman has a great build up of his daughter's '72 duster and tons of information on rebuilding the original AC unit.