hatch saleen wing fitment

hey guys,
i was wondering, will a saleen wing meet up/mount to the hatch in the same spots as a factory gt wing (a 1988 gt). i want to have it painted while its not on the car, but will the hatch need any painting to do the install? im not sure if the car has ever been painted before and it might be faded or scuffed underneath the wing, i dont want anything like that to show.
should i just have it professionally mounted and then painted?
are the bolt holes the same?
how much have people paid for labor alone to install a wing.
im also kina considering selling it and just doing an LX wing instead,
any opinions? ......

hoods are easy, ive never done a spoiler.

i hope this isnt a commonly posted question i didnt do a search

well when i bought my notch i traded the saleen wing that came on it for a hatchback style one, since i figgured it would be easier to sell a hatch back wing. but now i own a hatch and i hate the gt wing alot. thanks for the info, its just what i needed to hear. so i guess the finished look is gonna go like this.

1988 gt factory navy blue and sliver two tone
stalker front bumper(done)
cobra rear bumper(done)
saleen wing(to come)
2-1/2 or 3" hood(to come)
and crhome ponys (done)

the only thing left is everything else,:SNSign: thanks