gfx on formula

[lt14mla]

I wanted to add the gfx the trans am has to my formula i wanted to know how hard is this to do. I like the wings west kit but i dotn want to shell out all that money for it. I heard they are only connected by brackets and rivets. is this true? How hard would they be to get on my car? would i need to swap the bumpers as well? any info on this is appreciated thanks.