Rear Floorboard Details
Small hole in middle board allows access to upper muffler bracket bolt.  Boards are approx. 4 5/8" in width.
Attachment of boards is from below; fasteners appear to be 5/8-5 flat head wood screws.   Supports are 3/4" angle iron.
Closeup of access hole for muffler mounting bolt.  thumbnail
Note relief on front board to clear body mounting bracket.
Phil Mino
Strathmore, CA
A Few Pics of the Front Floorboards
-click here-