Esprit engine, s3 turbo or s4, do you have one?

[Ac's lotus's]

Hi, new to forums and that sort of thing!! I have a 1985 esprit s3 turbo (lc) with a dead engine, we are yet to take it apart but assume piston problems. We are going to rebuild the engine or hunt for a new one, so the question would be...

Does anyone have a 910 lump kicking around/for sale?

Or one that you could point me towards

Thanks very much in advance.