Had a chance to do a little searching and in the Factory Assembly Manual sect. 1, sheet 41.02 it shows a Division Reinforcement pn. 3695696. This part has a 5th hole in it. I assume that this drawing would apply to the 1953 model year and can't be relied on for models prior to this.
Denny Graham
Sandwich, IL

Last edited by Denny Graham; 04/23/2011 6:13 PM.
Denny G
Sandwich, IL