I might have some good news, if you're wanting a 2.4L and / or an Opel Getrag 240 from Europe. Charles Goin, who is well known around here, is interested (maybe willing is a better way to describe it) in doing a 4th shipment from his contact in Europe. However, he isn't really interested in drumming up enough interested parties who will pay for the shipment when it gets here. I can't really blame him in not being crazy about doing all the leg work to get people to place a commitment on an order of say 5 2.4's. It took him a few months to sell all the engines from the last shipment and I can understand not wanting to pay up front for the whole shipment without having the shipment spoken for beforehand. He doesn't frequent the forum as much as he comments on the various Opel Facebook pages.
So... I was somewhat asked to be the front person to find out how many people would be interested in buying 2.4's. Charles isn't interested in trying to sell rebuilt engines anymore, he really just wants to sell imported donors to people who will either rebuild the engine themselves or have someone besides him do it. He has a machine shop that knows how to work on the CIH now, and some members on here have likely had this machine shop do some of the work on their 2.4 if it came from Charles. Charles is happy to drop off an engine at this shop for you, and have you work with them on creating your engine if that is what you want. He'll also still just ship a donor to you if that is what you choose.
While Charles is a friend of mine, I wouldn't be promoting this if I didn't believe it's a good deal for fellow Opel nuts jobs... oops I mean Opelers. I received my 2.4L today (previously I misunderstood the bill of lading and thought I would be picking it up a little over a week ago). My order was for a 2.4L donor engine (block, crank, crank gear, timing chain, 2.4 Head, stock valvetrain, cam, cam gear, and timing cover), 240 Getrag for the CIH, an Isky OR-77 Hydraulic cam, new lifters, 1.9L intake, and 1.9L valve cover. It arrived perfectly fine and really well packaged on a plastic pallet that works great for loading into a truck. While I haven't started cleaning and rebuilding the 240 and the 2.4L, I believe I got a good deal on the parts considering that they need to be rebuilt going into it. Which was my whole plan from the beginning.
Charles takes a lot of stress out of the situation in how he handles the business side of dealing with an international shipment of this size. If you pay attention to German parts sources for these engines, you'll know that they are out there. The problem is getting an engine and a transmission shipped here from Europe for a decent price. Expect to pay at least $800 for a 2.4L to be shipped here from Germany by itself. The cost of shipping a crate full of engines and transmissions decreases the individual cost per engine or transmission. Hence the whole reason why Charles started doing this in the first place.
This thread will be for anyone interested in a donor 2.4L CIH or Getrag 240 for the CIH. You are more than welcome to contact Charles directly (PM me if you want his phone number) or you can just talk to me. I'll be trying to organize interested parties for a 4th shipment. From my understanding, a 4th shipment won't happen until there is at least a few people willing to order for an engine and / or transmission. If you want one, now is probably the time to start speaking up. Charles still has 2.3L turbo diesel crank kits for anyone interested in increasing the displacement of the 1.9L engines. Those kits will be everything you need to turn a 1.9 into a significantly larger displacement engine, with the required boring of the block.