I was working on installing a camaro rear in my truck when an ember from my MIG landed on the paper with all my alignment measurements and up it went. I am left trying to install the axle with no number for the wheelbase. I went to the tech tip page but I see no listing for a '49 GMC 1/2 ton long bed. Off hand I want to say that what I measured was 118" and change but this number does not match anything posted there. Anyone know what the wheelbase should be for this truck?