200R4 update
That's funny I came across this thread! Very interesting because I've thought about this years ago. I think I even made post a about this a long while back. I had seen a lot of guys running A-518s and cutting the tunnel to make it fit and decide about 200r4 since it was smaller the A-518. And a hell of a lot cheaper then running a Keisler trans.
This is very cool!!!! Nice job!!!