"attn short bed owners" need a measurement favor PLEASE

[BIGANTS83BLZR]

Could someone please mesure from the rear cab mount(from lower rear rivit)to the center of the rear axle.Im trying to get my wheel base correct,and here is why.
I purchased a long bed frame, and cut it down so I could back half it, I planned on getting all my measurments from a neighbor who HAD a 2wd short bed with a 4/6 drop, but just found out it got stollen last night.I dont know of any other shorty's out here. my frame is from a 67 2wd, but I think 67-72 is the same wheel base? not too sure though.so threre you go, my project is on hold till I get this measurement. Thanks you guys. have a good day!