If you try it you'll find very quickly that it's not really that cheap of an alternative to the raptor plastic. Mainly the seats aren't even close to the same. The raptor seat wouldn't work with warrior rear plastics, and the warrior seat won't work with raptor plastics. It'll take a lot of rigging and would probably look pretty mismatched and ghetto if you did go through with it. I see no reason why you wouldn't just spend the extra money to get something that's going to bolt right up and look good on it.
If you're that hard-pressed for cash that you can't spend $250 for new fenders then just repair the ones you have. There isn't much that can happen to fenders that can't be patched up easily. Sure, it won't look perfect, but still better than a bunch of mismatched stuff thrown together.