Are the mounting holes for the pedestal spoiler in a different location than the stock or gt500 spoiler mounting holes? If they are different, will the stock or gt500 spoiler cover the pedestal spoiler mounting holes if installed?

 

I've been wondering the same thing but pertaining to the MCA spoiler vs. the pedistal spoiler.

 

The gt500 spoiler looks like it sits quite a ways onto the trunk lid (from pictures) but can't confirm.

 

Stinger1982 replaced the standard spoiler on his with the pedestal spoiler and said the original holes lined up plus he had to make two more holes since the pedestal spoiler has four pedestals to mount it.