Few answers to help given more context....I have been wrenching for 20+ years but only on the side as a very limited hobby but I would say I have a full assortment of basic mechanic tools and space in my garage (no special Ducati tools though). I've been working on bikes limited past 10 years but mostly Japanese (built 4 Suzuki GSXR's and 1 Kawasaki ZX10R). Few engine swaps a couple of engine builds but from what I understand the Ducati engine is much more complicated then a Suzuki so it has me a little scared =( The budget is my biggest problem as I just got the bike and that was my budget so I am trying to find the most economical solution here as don't want to go into debt for this. I have researched have the case replaced through Ducati dealer but that is cost prohibitive, even they recommended me getting a used motor and putting it in (they offered to do it for 2200 to 3000 but I would be comfortable doing an engine swap myself). I've found decent low mileage engines for $3k from yard that give a basic 30 day warranty. With all that being said before I buy another motor I will certainly disassemble the current motor to see if A) it's just head gasket and my initial diagnosis is incorrect B) it's something less then a complete rebuild for bad case or seal. So I'm try to get all the facts so I know my best options but I hope this gives more clarification as I am just new to the Ducati world. Last the question about the 1299 was more my curiosity to understand what else fit's just in case I find something when looking for a replacement; it's always nice to know what parts are compatible, I was reading the 1299 big difference was the bore diameter but it had the same outer dimensions (used steel sleeves vs. 1199 aluminum). My plan will be to start a methodical disassembly hoping I can repair but I'm also going to look for a decent replacement in case i need it. With these I see there is a base model, S model, and R model so trying to see if that made any difference for the engine. I see the R looks like few internal modes for higher rpm.