rear frame dimensions

[victory62]

Ive got a 1962 chevy k10 swb fleetside and im thinking about buying the boyd efi gas tank in next couple of days because they are having a special for it. I was curious if the tank would fit in my frame? The tank dimensions are 26.5 x 19 x 10 i would measure it myself but my truck is parked in my buddies barn and im not sure ill get the chance to get down there to measure it before the sale is done. Thanks in advance
http://www.azproperformance.com/Boyd...ill-14004.html