Thanks for taking the time to post the pics, let us know how it functions.
Probably a number of folks watching this as I found it through the TTR forum even though I've got it subscribed to here.
I don't think I could find it, but in researching WR/YZ to TTR fork swaps I saw a nice photo of some steering stops that were modified by drilling into each stop (on the side towards the middle) tapping the hole & adding a small socket head bolt.
That way they were somewhat adjustable too.
I recently picked up a WR exhaust to try (there are a few posts of another installation on the TTR forum) Nice & light, hopefully not too loud.
I'll post results when I get to it.