M50 swapped e30 without A/C - how much?

[Ahheck01]

I'm probably going to pick up an e30 with the M50 swap - how costly is it to add A/C to these suckers? What do they typically go for used from a part-out, and what snafu's might i run into?

-Evan

[SWISS]

I'm probably going to pick up an e30 with the M50 swap - how costly is it to add A/C to these suckers? What do they typically go for used from a part-out, and what snafu's might i run into?

-Evan

~6K