yes, I used the same rear (UP4000) but used UP25664 for the front. The only difference that I am aware of between 6400 and 6500 is frame length.

As a side note, you can get replace UP with BH and that is the Raybestos part # if you want to order from Rock Auto or somewhere else instead of Napa but check prices at both places. Napa was cheaper on the front hoses I think.


Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
In the Stovebolt Gallery
1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery
1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery

Sufficient unto the day is the evil thereof