I've had a few boxes on my bay over the years, original one was pretty much dead when i got the bus, new brazilian / chinese/trw repro box didn't last long and the replacement used zf box did ok but was on its last legs and getting stiffer / beyond the limit for adjustment. I got a reconditioned box from N2 - arrived just a few days after purchase (via ebay but you can contact direct). Looked like a new box, all new hardware etc. including fitting intstuctions. Came pre-filled with appropriate oil. Silky smooth huge improvement on the old box. Cost 400 quid but you get 100 rebate when you send back an original ZF box that they can rebuild, so only 300 really. https://n2engineering.co.uk/ https://www.instagram.com/n2engineering/?hl=en
So is it on yet? @rstucke did mine. Really happy with it. My bay drives like a new car. When the motor went in the front end got completely rebuilt. That is a fair price that you paid if it’s the goods