Have a T-9 5 speed in mine and it's a very pleasant drive .... had it rebuilt by a local rally preparation man (who's also a hillclimb paddock mate) .... you will need a different prop shaft but they're usually not too expensive to have made up if you can't find one .... an issue is that the speedo cable comes out sideways and fouls the transmission tunnel ... cured with a 90° drive converter from Burton Power .... requires a different speedo cable but having one made to suit was cheap .... well worth the effort!
TBM and Arwyn have both fitted them recently and will be able to keep you right 🙂
K