I've got an old Rover P6 (1974 - Manual) V8 engine which is free to a good home.
It was a good quiet runner when it came out about 5 years ago and gave good oil pressure with no smoke and all the spark plugs ran clean. It was removed when the P6 was scrapped and intended for a project Land Rover which never happened.
It's free. It might need a total rebuild or it might be a runner with a clean up. It's almost complete, just a few bits were borrowed for other vehicles (ignition leads, a bit of fuel pipe, maybe a flame trap.) but mechanically all there.
Take it away or it will be scrapped. There's also a bare Perkins 4.203 block which is probably only fit for scrapping but that's free too if you want.
I live very near Junction38 off the M6 (UK) Un-mung my email address if you're interested or reply here.