The Ford Explorer was/is quite a popular vehicle. I have family in Europe that owned one a while back. Now, I understand that you may not see an Explorer every day where you live in the Netherlands, but I bet you do see other Ford products or SUVs. Research the rear ends in some of the Ford SUVs sold in Europe now, like the Ford Maverick or other brands that are basically Ford but may be called something else. I'm sure you'll find your 8.8 for cheaper than you think, it just might not come from an Explorer.
Here is a site with some swap info:
http://www.jedi.com/obiwan/jeep/ford88.htmlUse that when you look for your 8.8 especially if you need to look for an 8.8 in something other than an Explorer. Stay away from the Mustang 8.8 as it will be too narrow.
If you want pics or info you can also check my build.
Ideally, if your Jeep is a 5spd, you would want to look for an 8.8 with 4.10 gear and at least limited slip or posi. At least then you can lock the front and at least have a rear with some traction aid. Of course if you want to regear to deeper gears, then the 4.10 ratio isn't important.