So for those who have a 580B with a similar E brake handle but it has a straight rod like this. If you get the Dorman 924-5617 ( or get just a 924-5617 (no Dorman), you can get the handle on eBay for $18 and it says it fits 1999, 2001, 2004, 2005, or workhourse P42, P32). You can disassemble the new handle modify the arm and install it on the original mounting set up for a 580B.
- grind off and punch out the rivits that hold the handle on the base of the new handle.
- unscrew the new handle so the bent arm drops out
- punch out the pin that holds the bent arm to the adjuster part of the handle On the old handle
- grind and punch out the rivits that hold the original handle to the body. This is tricky as you have to get a grinding wheel and take out the inside rivit shoulders without damaging the body/frame mount, then punch them out. (See picture above)
- unbolt the sides of the triangle pivot piece at the bottom. You need a large screw driver to pry it open enough to get the threaded bolts out of the body without damaging the threads. (Taking apart the handle first helps make it easier to open up the body wide enough to get this out. Now the triangle and the straight arm.
- bolt the new curved arm to the end of the old straight arm using a square mark ithe new arm vertically just behind the bolt hole and cut it.
- line up the new cut arm with the old arm and mark and cut the old straight arm so the new modified arm will wind up the same length of 6 inches as the old straight arm when your done. Cut the old straight arm.