I did the same thing to my '68 today! Had to see what it looked like, and I kinda like it. Makes the rear more "muscle car" IMO. Removed the "Sport Sat" trim and sail panel mouldings too. I'm on the fence re: the fender turn turn signal indicators though.
As for filling the holes, I'm going to have them welded. Don't know of any DIY method that'll last in the long run - I'm not taking the Bondo/JB Weld route on something as visible as the deck lid.
HA! What a coinc-i-dinc! My trim was for a Sport Satellite as well.
Let us know how it goes.
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Thanks for finding clemul!