Any Gen III Hemi engine swaps in a Dodge Conquest?

Done smallblocks, but not a G3.
Nice thing about Mitsu built cars (Colts, Arrows, "Challengers" and the D50 truck included) of that era is that the automatic versions used a Chrysler-sourced 904 tranny- so crossmember, shift linkage, driveshaft and rear can all stay in place; even the speedo is an easy hookup if you stay with a 904.