In that case following are my answer next to your questions
1- Army Auction, without engine. Price? Ranges from 60k to 100k or maybe more but average around that. The Army didn't run CJs, they had M38A1 which was quite similar to a CJ. I am not sure but government departments ran CJs.
Registration cost? Depends, if its an auction the cost is based on which year it was auctioned, the engine you put in and if its a privately owned you the docs come with it. Average auctioned registration costs about 30-50k
Yearly token? Depends on the engine, you know the slabs, 2000cc for diesel and 1600cc for petrol is nominal if you go for more than that you might end paying 25k per year
Price of decent rims and tires 30-50k
Price of a Land Cruiser dashboard and seats? 10-20k for dash and same goes for a pair of of seats.