If you go down that path, you'll almost certainly need to get the complete engine, clutch, and the SE6 gearbox; as they are integral components that all live in the same block & engine/trans assembly; and they share the one oil & lubrication system, so if anything has broken enough to be able to stop the engine from turning, then it's extremely likely that at least the littler bits of chewed metal have also gone into/thru the clutch & gearbox too!! :lecturef_smilie:
That said, these Rotax engines have, to date, been pretty much bullet proof - I think that here on the Forum, we've only heard of maybe 2 or 3 major failures out of close on 100,000 Spyders running these 1330 engines, and many of these engines are still reliably running with 100,000 miles plus on them - some are even pushing 200,000 miles now! So I don't really like your chances of finding anything good out there, at least, probably not anything that doesn't come out of a wrecked Spyder - and as you may have guessed from the wrecked engine mentioned in the other thread, if the Spyder it was in has been wrecked badly enough to write it off, then because of the way these engine/trans assemblies are used as what effectively becomes 'a part' of the overall framework of the Spyder, there's a good chance that some of the important bits have been busted beyond useful/easy repair! :gaah:
So once again, I don't think it'll be all that easy finding a '
good, used engine' out there, not even one that's 'remanufactured' or come out of a wrecked Spyder.... :dontknow: But maybe BRP will sell you a new unit!

Sorry.

pps: