if its anything like my polo TDI, you wont have to do undo anything driveshaft related. as he said, theres a big cutout in the flywheel so you can get a long allen key or 10mm socket! remember to use proper VW sump sealer too and get a good thick coverage! dont want any oil misting out the sump, do we? and remember to check the sump plug is tight if you get one with the new sump... i nearly forgot!