I've had one set of tri-Y extractors made to suit solid axle front suspension yet the supplier doesn't wish to put those into production. He does however wish to get my Surf off me and jig up a production run for 1/2UZ into IFS Surf/4runner/Hilux. Indicative cost of $800 AUD per set. This won't happen in a hurry as my Surf is a daily and good things come to those who wait
The swap looks like it's going great. Do you have any pictures of your die grinding inside the exhaust runners? I'd like to see how tidy you made things in there. I imaging the cleaner and smoother it is the better the exhaust is going to flow. Thanks for the great idea.