Does the rear wing on my 86 trans am just unbolt for removal ?

yup

lift the hatch

there are a couple plastic plugs on the underside (your looking for the big ones)

pry em gently with a putty knife (a good stout one though, they are IN there sometimes)

and then you have access to all four bolts that hold it on.

I believe they are 3/8's but don't take my word for it, I just did this the other day to my brothers 85 Firebird though and it was cake

took 5 minutes

Yes 2 bolts in back and 3 clips on each side