Probably WAY late to the party on this, but if you are still trying to work clearance issues with the pitman arm you may want to check out the pitman arm from a 90-2000's GMC/Chevy Express Van. These are actually raised instead of flat or dropped and fit a normal Saginaw box like a TJ/YJ, so they are likely to fit your box if a Waggy fits. Length-wise they are the same as a TJ ( ~ 5.5" C-C). You can get them from regular parts store for ~ $40.
Here's the link to the one I am using in my build:
MasterPro Chassis K6653 - Pitman Arm | O'Reilly Auto Parts
