I would imagine you already have the dog guard hence the question not sure if they would fit as the MK2 is a different shape and Mk1 dog guards are dirt cheap on EBay I picked one up 5 miles from where I live for £10 ,they really dont go for much
Ironically when I was looking most were either Newcastle way or deepest darkest surrey but I just waited for one to come up local and didn't want £80 for one. I know they are expensive new but second hand value is extremely low