98 ext cab long bed 2500..dually?

[kev2809]

My father in law has a 98 (i think) extended cab long bed c2500. was his work truck for years until he blew a hole in the block last year. i have the option to get it for free, and then replacing with a junk yard engine myself. BUT, what i am wanting to do is try to swap a dually rear end and fenders, and putting a nice drop kit on it.

are the dually rear ends as easy as just swapping right over? i figured the 2500 frame would be identical to a dually frame since they are all 2500's and 3500's for the most part.

havent had one of the model trucks in YEARS so i am not too familiar with them. any info appreciated!