Need a Wing

OK, I originally assumed my rear wing was just loose but after I finally looked at it, it is broken , where the rear bolts go in it there is nothing left, I guess the original owner used the wing to open the hatch too many times or something, but anyways I am leaning towards a cobra wing now, are the bolt locations the same on the cabra as they are on my saleen, or what will I have to do to make it fit, also can you get the cobra wing in fiberglass only or can you get one in urethane?? and where is the best place to get the cobra wing??
Thanks for the help
oh, I asked about geting it in urethane because my saleen looks to be made of urethane not fiberglass, I'll find out for sure when I pull it off.

Will the outers be the same from my saleen wing to the cobra wing? Not worried about the inner two.