The dodge outers in 5 on 4.5 are unit bearings. You would need the outers shafts (if they are even 297x... they could be 260x), knuckles, caliper brackets, calipers, unit bearings and rotors... then you would still have unit bearings with no lockouts, and the chance for highsteer is slim because it's like the rarest flat top ever that no one has any clue about anyway.
Your best bet is to run Jeep or Chevy 6 lug outers. For simplicity and availability. I don't know if they make a 5 on 4.5 to 6 lug wheel spacers or not... but you can either go custom shafts or something else in the rear.
I guess you could always go ford outers, and run 5 on 4.5 to 5 on 5.5 wheel adapters... I know those exist.