I might be able to help, I'm pretty sure I've got two sump plates stashed in the garage. I'll get back to you ASAP
just checked, I've got a shallow oil pan part number 1262 722, I believe this was off an R80, and a deep pan part No: 1336 994 which IIRC off an R100. Sorry no holes for mounting a sump guard. If any good I can post you one tomorrow £20 plus P+P.