Cab straightening?

[Jay_D]

i bought a 1971 K 20? with a 6 inch lift fairly nice condition for $1200, the only problem is the windshield is so bad and i contacted the original owner and he told me his son rolled the truck but like a love tap roll nothing serious just hit a snow bank slowly and rolled it and it bent the roof over a bit enough to break the windshield. Just wondering how i can bend this back to its original spot so i can get a new windshield ill try and post pictures but i am new here and keep in mind i don't have much cash i have to do this myself most likely thank you.