When I purchased my 03' Dodge, Chrysler had a deal going which gave a person an option to purchase the "Jacobs" e-brake when ordering the truck, for $200. 00 "if you owned a business, and provided a business license number. " I had to wait for a couple of months before I received it, as they had to re-design the vacuum pump. When I received it, I also installed it myself. It has been vertually flawless too this point with some 80K PLUS miles on the truck.
My truck has the NV-5600 6-speed,, and the "Jacobs" e-brake was not available for the Automatics.
Wayne
amsoilman