So I made a start on this yesterday, got both boxes out, luckily I have a double garage which has made it a bit easier but my advice to anyone doing this, if you can get access to a ramp it will be done in no time. So currently my 200tdi has a new clutch and the R380 box out of my 300tdi bolted straight on, no modification needed here from me anyway 😁 with only the weight being the most difficult part so far. I still need to change the speedo drive and the handbrake before I can fit the R380s t-box. As FridgeFreezer said, both gearboxes are the same overall length - the gear stick on the R380 box sits a little further back than the LT77 by half inch or so because of this so i may need to 'alter' the centre console to suit or maybe I can do something with the shifter instead but I'll address that later. 🤔 I plan to use the R380s gearbox mount, but I have both so will see what fits and post an update.