For the rear no. I made the holes in a straight line with the holes on the sides. In the middle I fit it with two zipties 5cm apart.
But you can of course just make extra holes on the original and it will be the same. I had it like that on my other bike.
Normal size but it's "home made" from a plastic sheet. I made the holes in-line to fit it to the cross section of the rear triangle. (Sorry I don't speak German.)
Welchen MarshGuard hast du denn hinten montiert? Den normalen oder den großen? Hast du neue Löcher geschnitten? Das sieht bei mir beim hinhalten echt seltsam aus...
But you can of course just make extra holes on the original and it will be the same. I had it like that on my other bike.