I had holes from drain hole size to pin holes. Used the silver POR and covered with the glass mat. Stuff worked great! ' Course my floor is silver now but it is a floor again! (PAT,ARE YOU LISTENING TO THIS?) Behind the seats where the floor 'slopes up', I had to cover with light sheet metal, due to a rusted softball size hole. POR, pop rivited and covered it also. Looks really good. Had to order some more to finish the rear deck because the kit only comes with a pint. One more thing...If my floor looks good now, you ought to see my arm from my wrist to the elbow! Thanks, guys.