Not to beat on you, but this is a hobby that is generally only in a hand full of states and countries, it is not like a drag race track with ls motors, so if you have to wait a year for a part that is not bad, some exotic auto sports might wait years for parts, as the market shift to big box factory vehicles, this will make the transaxle parts harder to get,
I waited for a for a S4D for over 15 months, after that i have always kept parts on the shelf, like a saving account every month i order a spare part for my trans, when i go into my transaxle i will have every part I need on the shelf,