Hot Rods Model A measurement needed

Can anyone tell me the measurement of an A coupe or sedan from the front of the bulkhead (where it meets the chassis) to the centre of the rear axle , are 28/29 any longer / shorter than 30/31 or both the same measurements ....Thanks Mark

 

My '30 sedan measures 74 1/8" from the center of the rear arch for the spring to the front of the firewall

 

all the same,same frame was used for all bodies............................

 

Thanks ...... something for me to be going on with ...

 

http://www.wescottsauto.com if you need frame dimensions.