I have a 95 SS-III with the stock spoiler,
which has 3 connecting parts to the car
(two at the sides and one in the center),
like pictured in my car here:

I want to change this to a different spoiler,
which only has two connecting parts (one on each side),
as pictured on maikl's car here:

So, my questions:
1. how much?
2. where from?
3. is it easy?
4. and will it leave nasty holes or something visible where my
previous spoiler used to connect in the center?
which has 3 connecting parts to the car
(two at the sides and one in the center),
like pictured in my car here:

I want to change this to a different spoiler,
which only has two connecting parts (one on each side),
as pictured on maikl's car here:

So, my questions:
1. how much?
2. where from?
3. is it easy?
4. and will it leave nasty holes or something visible where my
previous spoiler used to connect in the center?