Nissan zd30 is a bit old to bother with. It is seriously slow. Not to mention the whole grenading issue. There are much much better diesels available.
Any 3l diesel is going to be pretty heavy. Not sure how it will compare to original 4 litre.
Wiring is going to be a pain with any modern engine.
Is the engine bay wide enough?
Engine conversions are very expensive and labour is an absolute killer. The finished product is never worth what you put in if you try and sell it. For similar money buy a jk crd.
If you are set on a diesel tj you need to get a list of potential engines together.
What gearbox are you going to use? Consider available adaptors are their costs.
There is a company in the USA installing small modern diesels in older wranglers. I think they use Volkswagen engines?
I would be using a small 4 cylinder engine in a tj myself. They are relatively light and realistically not going to be used for heavy duty towing.
Do you have a budget in mind? A good engine and associated bits and pieces is going to be at a guess at least 6k. Plus any adaptors, engine mounts, engineering, labour etc etc.
A modern diesel into a tj will be a lot of work and money. Not trying to turn you off or saying it's a bad idea but be aware of this now. Only you can decide if the potential finished product can justify this.
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2008 2 Door JK CRD auto
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