1994 c280 rear window R&R

hey guys, a customer called me about doing an R and R on his "bubbly" rear window. 1994 mercedes c280

i've never messed with an older Mercedes like this and was wondering if anyone had any tips on the back window for me.

- i've heard a lot of older mercedes have the rubber right at the edge with no black outline wiggle room, anyone know if this is the same on this model

i told the custy i'd have to look at it first, but he won't be able to come by for a week or two and thought i'd do a little research in the mean time

Thanks everyone