Quote:

4611S - 340 4-spd (part # 2946 576)
4612S - 340 auto (part # 2946 590) should be (part # 2946 579)
4639S - 340 auto with A/C (part # 2946 590)

not sure why they show the same Chrysler part number for auto with and without A/C (got it - replacement carbs)
What's on your b'cast sheet?