I expect to be in the same position a year from now. You can try BarnStormers website and look under Engines, Piston and then filter for Lycoming. I see some IO320s and O-360s, but few IO-360s. Also try searching for aircraft engine salvage companies (if you want to go that route) including; Atlanta Air Exchange, Air Salvage Dallas, etc. Many of the engines listed have suffered a prop strike as well. Use and rebuilding of these engines, I believe, has already been covered in this forum, so you may want to search and read the topic threads. Alternatively, there is also Van's Lycoming discounted engine and since Oshkosh is coming up soon, there may be some discounts offered there?? Lastly, there are also some custom engine builders that can provide what you are looking for but although pricey, they are likely a good investment for durability and future resale as well.