Funny you mention it though. I'm actually debating on what direction to take with that. I've got a 331 now and I'm on the fence about sticking with the stock 5.0L badges for the "sleeper" effect, or adding a set of 5.4L "Stroker" badges?
I wanted to go 2.3 with emblems for the sleeper effect, but, as I said, the exhaust gave it away. No purpose advertising if it can pass as stock displacement.
I bought all the stuff I need to put "5.N0" emblems on my V6 Mustang. They will be in place tomorrow, I hope. Its a little trouble for a joke, but I decided years ago if I ever had a V6 Mustang, that I would do that. I'll post pics when done.