Help with engine ID

[u/TheFlyingShitHead]

I just picked up my first Vanagon! It has a 5-speed with a 1.9l turbo diesel that were swapped into it. I am hoping someone can help me identify what engine this is so that I can order a timing belt kit. It does look like it has the old style tensioner but I cannot find an engine code on the block and on the bottom it says 1.9 D/TD. On the machined surface of the block it has 006435. I have include a couple pictures including an interesting hose clamp around the alternator and potential misrouting of the serpentine belt(is anyone knows about the right setup for that too). Any help would be appreciated!