I'm going to follow your diesel conversion with big interest though I'm also going to put a VW turbo diesel in my SJ413
As you can see in the topic of my SJ413 build that is a low budget project. Yesterday a bought a VW turbo diesel, 150000 km and in acceptable condition, for 500 Swedish kronor (that is about $70). I'm going to use a homemade conversion kit (adapter plate and modified flywheel). If you want I can post pictures of it in my topic here in Build Diaries. I have only engine mounts and some other small parts left to make.
$2940 for engine and conversion kit is a little over my budget.
I hope to make it for under $300 including service and changing the timing belt
Kind regards from
Hannes in Sweden