Charlie,
Pop Quiz!!!!! This is for a 85 L-TYPE!!!! Correct??????? Just checking!!!
If it's for a P-Type, you won't be able to get the top portion to attach the upper part of the window. Part of the fiberglass spoiler surround sits on top of the window, it does not rest on the sides of the window.
However, if you are able to get it to attach to the window, then you'll have to leave the black upper sunshade off... So that you can lift up the louvers to clean the back window..... If the louvers don't lift up & the window get's dirty over time, it's impossible to clean it!!!!!
Keep this in mind folks!!!! Rear window louvers are fine, ASSUMING you have a MKII L-Type, or your 82 - 84 P-Type does not have the big upper hatch spoiler!!! "Some" louvers can fit underneath the upper spoiler, but then you won't be able to lift up the louvers to clean the window!!! If you have a 85 - 86 P-Type, then you have a problem... Louvers, or complete hatch spoiler.... One of them has to go...
Take it from someone who has seen just about all of the available MKII hatch louvers that are out on the market & knows where the attachment locations are. It can be a slight problem.
On Slip's car, the only reason why it fit's on his 84, is because he has the Leather Interior & during the 84 model year, the Leather Interior P-Type's didn't come w/ the upper hatch spoiler/sunshade.