Can I use a 1981 gas 2wd auto D50 as a donor for a 1985 dodge ram D50 4x with 4d55 ?

[2brandonb]

I own a 85 dodge d 50 diesel with the 4d55 4x4, 5 speed, rust is an issue with my diesel and I need a donor. Will a 1981 d50 cab/body/bed 2wd automatic truck be a good body donor truck to fit all the diesel components for the 5 speed 4wd parts. Thanks.
My vin is JB7Fk44J6FP4277. the donor trucks vin is 9JL4UA7105829. Thanks again