ok i have an option to buy a complete 8 3/4 rear. it has everything including the 4 in bolt pattern. my demon already has been converted to the 4.5 bolt pattern but it has a 7 3/4 rear in it. what would i need to convert the 8 3/4 to 4.5...
Axles.
is there anything i can pull off the old 7 3/4 to make this work
No as far as axles. You might be able to use some brake hardware.
