My truck is a 1998 f-150, and it has bench seats. And as all of you know my bench seat has only four bolts into the floor. And a 60/40 seat has five, the fifth being the one that is in the front of the seat in the middle that bolts to the hump in the floor. My ford has an indentation in the floor where that bolt goes but I am not sure if there is a hole there. Will these seats fit and how big of a deal is it to drill a hole in the floor?