i am looking at spoiler online for my 93 Volvo 850 and the one i found is from a 96. i know that generally every part is compatible in all these years, but with that being said, I know the tires and front lights are different on my car so i don't want to take any chances, Thanks

 

I would think it would work fine, but the wiring might not be there for the brake light in the spoilier. They really just kind of clip on the edge of the trunk and the shape of the 93 is identical to the 94-97 so it should work.