you dont need to .removing center consol and rubber gaiter covering tunnel hole isnt that long/hard a job ,for 300 top of linkage were it joins lever assembly is bolted unlike pin on the 200 tdi in vid you need 7mm and 8 mm spanners,bottom link that joins to selector lever on t/box should have a clip so that it doesnt pull out like that one ,normally you undo 13 mm spanner size nut to remove linkage, its all accessable through tunnel but would have been easier quicker to unbolt mounts for transmission and lower it on a jack that removing seat,carpet to cut hole ,contray to some opinion pivot eye bolt for diff lock linkage often needs adjusting to give equall movement in/out of diff lock ,dont lose top hat plastic bushes in eye bolt though, there is nothing wrong with elongating gate plate on lever housing you cant over select,jacking one front wheel up so you can get some one to spin it while you check selection of hi/low and diff lock inout