so what you are saying then, is that the oil filler plug is in the bellhousing, not the gearbox? In which case, wouldn't it have been simpler to just say in your first post that its irrelevant which side the gearbox filler plug is on, because someone may have swapped the bell housing anyway?
And as for this:
How about answering the question that this thread is all about, using those 'years of experience', so that the rest of us don't have 'read things on the internet' to 'find out' what we want to know, then have some smartass turn around and say thats wrong, and not fully explain himself, or give a complete right answer. Its not the first time you've posted some comment about 'that can't be right, because from my experience', then disappeared and not answered the question that had originally been asked by someone - if you can be bothered to post and tell someone they're wrong, then you can be bothered to answer the question being asked in the first place.