Bumperette Installation

[Batlcry]

Greetings from The Great White North
Fortunately not white anymore and am anxious to get my Spider on the road.
Just purchased a set of front and rear bumperettes from Vick Auto. The method of installation for the rear (haven't even looked at the front yet) doesn't really seem obvious. The bumperette has a metal bar with two holes in it but they don't seem to line up with anything. Has anyone installed these before and if so, how did you do it?
Any advice much appreciated..
Cheers,
Lon ✌