Hello, I am in the process of rebuilding my 1946 Chevy 1/2 ton pickup and want to check the frame dimensions. The rear of the truck was hit at one time and the rear frame rails are slightly bent behind the rearmost crossmember.Is this in the shop manual? If so, where can I get one. Does anyone have a dimensional diagram with measurements that they could fax or email me. Thanks for your help, Al.