Merrill Mundell

I have the rear belt anchor points figured out easily. I've got a real puzzle how to put seat belts in the front. The seat is a unit of metal and some wood very close to the floor. I hate to cut the seat back and the carpeted back of the seat for a belt passage, and since its metal I'd need to protect the belt from rubbing on the edges with a gromet of some kind. Really would like some ideas