Hotroders have been doing all sorts of wheel magic long before major manufacturing stepped in. With next to nothing , centers have been changed, moved, reversed, wheels widened, narrowed, redrilled, welded, straightened and chromed or painted. Axles and hubs have been narrowed redrilled and adjusted accordingly. All backyard garage work. Not that anyone with a garage in the backyard could do it, but that's where the aftermarket industry starts. Basic availability of stock wheels isn't what it used to be and thats what makes a market. You probably can't go find wide 40's Buick rims in the boneyard at the corner. But you can find 12 steel wheels maybe even 20 to cut up and make a set of 4 if you built a car that needs custom wheels. Building a car that used stock wheels is another option.