It doesn't have barrels, pistons or heads, and you can see rust on the rods and crank through the barrel apertures. It does turn over though. It came out of a '77 Sport chassis but doesn't have the stamped 'S'. The drive side cover is the non-electric start type & it didn't have the 'leccy start flywheel.
It might be a good source of clutch and gearbox parts, I don't think the cases have been parted.
I have photos, but can't shrink them enough to attach, so PM me and I'll send them to you.
It's located near J3 of the M25. I'd like £100 but feel free to PM me with offers.
Cheers
Richard