Straightened the frame extension last week, it has been bent sense before I got the truck, and only noticed it after powdercoating...
Used some slings and a 3 ton chain come-along anchored to the railroad track at either side of my garage door, they're sunk in about 3-4' of concrete.
http://rides.webshots.com/photo/2573223880080251109WFlUfY

No problems tweaking the one back over about 1"

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-