On another front, or rather rear for that matter, a fellow I know has found an NOS pair of GM aluminum brake drums. Pricey, but could be made to work with a Chrysler rear end.
I once and only once, saw a pair of either custom fabricated or very very rare factory aluminum rear brake drums for a Dana. It was at a Mopar show/swap meet in CT.
The GM drums applied to the Chrysler rear could be pricey unless starting from scratch when building a new rear end and housing.