Pat, I think everyone will ask you for additional clarification. Based on my thinking and experience, if you are to try and mate one part of the YZ to another part of the TW, I would say it is very unlikely without major modification.
Now, the potential of putting a complete YZ fork (tubes) into a "bored out" TW tripple-tree holds lots of potential, but no-one to my knowledge has presented a "complete" and tested set-up. Seems Jonny came 'very' close, but we have not heard from him since his last "mock-up".
You will likely need the TW tripple-tree for its width if you stay with the stock front wheel (Rodrey did not). I was able to overbore my stock 32mm (I think) triple-tree to 34mm (I think) to use the Tri-Z forks. For me, these forks have been great, but required some significant changes to brake mounts that would require that you give some serious thoughts to safety.
For me, the stock axle was plenty long enough for the new forks. However, the axle 'holes' in the new Tri-Z forks were a larger diameter. Again, caution here, but I felt comfortable having a machinist make sleeves/bushings to produce a snug fit.
In my opinion, suspension mods reguire that you give lots of thought to your personal safety (I still wonder what happened to Jonny Blaze). I would suggest, if you proceed (I did) do lots of slow, cautious trial runs with lots of 'test breaking'. Good luck, Gerry