Rear of the axle gas tank

[cw4rdmn]

Anyone know if this gas tank would go under the bed of my truck where the spare tire would be?

http://shop.oreillyauto.com/ProductDeta ... 96&PTSet=A

If not can someone explain it to me?

Thanks

[Sam I Am]

From this page:
http://www.fordification.com/fuel-tank02.htm

Unfortunately, there really isn't any true bolt-on tank currently available for the '67-'72 pickups. Ford used a rear-mounted tank (mounted between the frame rails under the bed...pictured below) on the '73-later Ford 2WD pickups, but the frames are four inches wider from the back of the cab rearward. Because of this, they WON'T fit inside the '72-earlier frames.