Yes there is, I've done mine.
Buy the straw kit.
https://www.butlertechnik.com/installat ... 7193-p1702Run tank low ish, Jack the van passenger side up or drive it up a curb to allow you access to the tank, undo tank strap to lower tank down, you'll see the port and the tube kit has instructions on the height you should cut the port end off, there are markings or flat to show you, cut it with knife then install the straw and then the Union and pipe as per instructions, then run the heater up.
56 350 2.2 130ps mk7 with 2 side doors
65 290 2.2 125ps custom with 2 side doors
07 350 170ps
Ids v86 licence + v86.04 update + xprog
hereIds map
here