1929 ford coupe
 

Getting ready install a new set of subrails in my coupe , someone already cut the entire floor out , what I would like to know is between the door and b pillar what should the gap be on the inside , thanks for any help

Re: 1929 ford coupe
 

From the edge of the A pillar to the B pillar 26"5/8 at the bottom . The opening is 27"1/2 inches face to face at the bottom .