The salesman data book shows that measurement as common for the cab from front to rear. I can scan the page tomorrow if you would like it for reference? With the cab level and the front clip off you can then set your column correctly. It is not uncommon for these to be off a bit, but unless it is bent it should line up. The thing to remember when fitting these trucks back together is leave all connections loose until you have all the bolts started, then tighten things up.
