Come on Stu, tell us a story, what has happened, have you popped or melted your car engine or is it for a project?!
I melted the cylinder closest to the gearbox on a PD115 a few years ago and I put an online parts requested on a few websites after googling for online auto spares, or similar. I actually replaced the engine with a PD130 lump from a Fabia but everything mated up without issue.