[rotorwrench]

Many of the old FoMoCo cars that had factory skirts just had a tension fit to the fender well. Two lower fittings and a center locking rod that was rotated and hooked around the slower skirt lip to hold it locked in place.

I'm not familiar with skirts for the 41 models but it appears to be a similar to the later cars. It looks like they used flat metal stock to form the fittings & latch piece instead of formed heavy rod stock like the later 40s & 50s FoMoCo cars used to secure it to the fender. It also looks like one end is fastened to the rocker panel but I can't tell for sure. That would make it a b!tch to remove. Many of these items were made by aftermarket companies. Some were well engineered and some are not. I'm sure they can be made to fit OK if they are indeed for a 41 car or perhaps a later 42 thru 48 car. They generally follow the contour shape of the fender opening pretty closely.