they say a weber 32/36 or a weber 38/38 is a good replacement (power and mileage).
you will need an adapter for the super six intake. You will need after market linkage for the carb.
the above carb i believe jeeps use them.
I believe there was 3 article of the slant 6 in the latest issue of Mopar action. first a one pager about the slant 6, the other 2, was about forced induction, an expensive way and a cheaper way. sorry if this was already posted.
Jerry