Leaderboard

Can you swap those parts on the main shaft? Maybe check part numbers - if the main shafts are the same part number then the guts may be interchangeable. If the trans case the rear extension housing bolts to is the same part number then the extension housing case should bolt right up. If course this logic doesn’t work the other way (if they’re different part numbers they still may interchange, very common for that to happen). Its been awhile but I thought all JDM H6s have VTD even if they’re not VDC. If that’s the case then what you’re ideally trying to do should be possible by removing everything possible out of the extension housing and swapping. I’m pretty sure us VDC people buy JDM non VDC trans and bolt them right up. Pretty sure I’ve done that. That doesn’t guarantee the JDM trans are the same as US but I’d be surprised if Subaru made a different trans (VTD non VDC H6) just for JDM.

Best option may be a trans swap. Check car-part.com are you able to get the car to http://superiorsoobie.com/ ? user @GeneralDisorder or one of his guys could advise you.

ultra grey for sealing dont go crazy with it.. dont need it squishing back inside.