the 3600 is a different animal when it comes to the brakes and rear end also has a longer box and running boards.
some parts are the same.
most who want a taller geared differential end up going to the junk yard with a tape measure and finding something that will fit
then you have to weld new spring perches and shock mounts
do your research before you start doing stuff with a 3600 some parts are available some aren't
evaluate what you have and then decide what to do based on the condition and what parts you need
Last edited by 513600; 12/09/2014 9:45 PM.