My dad had the 5.0 emblem on his Comet back in the 80's. I don't like it. I do like that old V8 emblem though!
There's a pair of small "302" hood scoop emblems that I think would look right. Of course, I think then the only proper way to do it is to put them on a hood scoop. I have both of the aforementioned items ordered, pics soon.