lots of parts that need to go!

[Dave]

You'de probably be almost better stripping the engine down again and selling off the 'new' components that you put into it, like shells, big end bearings, main bearings, rings if they're totally unused/never started. Sorry to say but a totally stock DT engine, regardless of if its been totally overhauled is worth peanuts when new components offer no real advantage over the lifespan of a £50 xud block. If the head has been totally overhauled then you're likely to sell that, or try ebay, selling it as a 0 mile engine, but you're still unlikely to make half of the money you want Honestly, your best bet is to sell the new components to someone who is overhauling their own block.