The worm housings are the same for 32-34; the sector housings are not, as per other posts, but a 32 sector housing CAN be substituted onto a 33-34 steering to make that part a 32. I just measured both housings (again) and the 32 is 1/4" longer than the 33-34 (at the centerline of the sector shaft), although the flange angles appear to be the same. If you redo the mounting hole pattern in the frame, will also need a 1/4" spacer... If you replace the sector housing with a 32, be aware that the very early Commercials used a different housing with a "B" stamped on the mounting flange, while the Passenger part has an "A". Has to do with the different column angles...
The worm shaft itself on 32 is shorter than on early 33 (13:1 ratio) and later 33-34 (+1/4" length and15:1 ratio) Since 32's are usually 13:1 ratio, getting a 34 with 15:1 is good. Worm shafts can be shortened, but may also have to relocate the steering lock striker, which is not a big deal.
If the "34" steering that you are getting makes 4 complete turns lock-to-lock (while not in the car) it is a 15:1. If about 3-1/4, it is a 13:1. You will also need a 32 Pitman arm, of which there are two versions... In fact, there are two versions of the 32 SECTOR housing... Has to do with Passenger vs. Commercial and the angle of the steering column... which the Pitman arm is "reclocked" to get it back to vertical at straight-ahead on Commercials with the steeper column angle.
It would be alot easier to find an actual 32 steering...
