I had a new 1980 F - 250 4X4 lift kit, Monster Mudders, the works. The cops in Orland Park used to hassle us endlessly. Between bumper height bull ***** to no mud flaps. I took two full size mud flaps from a tractor trailer and bolted them on.
I drove to Orland and stopped at the Police station and asked if these were big enough? No one had an answer for me.............I made a point to drive through Orland and bring a headache to the cops there over it.

Fastronald