Right, so I've been plumbing in my mates conversion and hit a potential bump in the road!
So upon removing the Webber conversion and associated parts from the 1600 ryder block I've got one of these.

that rather conveniently fitted snugly into one of these.

However, with a quick jog to the engine that's replaced it what I'm faced with is one of these.

So. Do I simply remove the plate on the mk3 2l bottom end and I'll find myself with a casting perfectly suited to receiving this part, do I need the part [actually, that's a daft question surely! Course I need it/an equivalent] or do I need to get a little more creative?
Also I've since discovered two holes in the side of the oil filter housing [arrowed on the third image] that look as though they've been welded up and then opened up again. Anything to be worried about?
morgs