Is there an installation process for these? It looks like they snap in but cannot get the front lip or rear lip to snap into place depending on which you do first.

Does the whole sunroof have t come out and it is done from above?

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Norm K.
'97 E420 Sport
'06 E350 Sedan
'67 Mustang Coupe
'70 F-250
'15 VW Jetta