A/C on 170 Slant 6

In at least some of the years the 170 was available—possibly all of them—A/C was not offered with that motor; you had to have the 225 at minimum.

A 170 with 2.76 gears in a lightweight '62 Valiant wouldn't be diesel-Wabbit slow (0-60 maybe sometime later this month) but it would be very slow. Add the weight of the A/C system and turn it on, and…well…0-60 maybe sometime later this week.
But...if you're in SC, and not interested in going more than 45, comfort matters...So SlantsixDan, if it's not a viable alteration, why did you sell me the evaporator, and walk me through all I needed to achieve it? I would have appreciated a "just don't do it" advice instead....