So after looking at a few 440 motor home engines I decided to keep the donor 360 for now, and rebuild the original 383 down the road.
I did some research on the 440 motors in RVs and they are completely different from the ones used in cars.
They have different heads, Cams, and Cranks. While I could use one of these I would no doubt be putting money into a engine I would never use once I rebuild the charger original 383.
The 360 I can use again in a old Doge truck for another project down the line.
I had to order a center sump oil pan and a Oil Pickup to fit the 360 into the charger. The truck oil pan placement was all wrong.
After they came they look correct and will work. One thing to note is the driver side motor mount bracket is slightly larger than a 318 bracket. This is no big deal as a spacer or few washer can fill in the gap.
A few things I need to look into next.
Headers are not aligning correctly. While they did come out of the Dodge truck they look like they might fit if I take the sway bar out and push it though an opening in the Header on the driver side. Passenger side looks like its OK.
I wont know for sure until I get the bar separated. Hopefully I dont have to buy new headers.
Wiring: The internal wiring should be good but the engine compartment wiring as been sitting exposed since 1983.
Even though the wiring looks OK I will still likely go though each connection up to the point it enters inside.
Radiator: Need to find a radiator to fit hopefully from a part yard.
Gas Line and Gas Tank: Need to drop the gas tank and see what condition it is in. Hopefully it is not to bad but I will see. The gas line likely is still usable but will need to inspect it more closely and may replace.