The larger truck method of reaming after installing is better, even though it is more work.
If you want them to last it is important that they both be on size and have the same centerline when done.
To accomplish this there are piloted reamers.
Or supposedly better yet is to have them professionally honed to size (and parallel) at an auto machine shop. They say honed king pin bushings last longer than reamed.
You can ream or hone one without referencing the other, and the pin may "fit" but the results may not be desirable, they may not last long.
Ideally you ream/hone one bushing with reference to the other bushing.
Grigg
