65 roll cage help?

Buy a kit, buy some extra straight tubing; become friends with the local bender guy. Buy 1 1/4 " electrical pvc from Ace Hdwe, etc. It is the same size as 1 5/8"; buy fittings, heat it and bend it. Then take that template to the bender guy. I'm on the third attempt on a halo for a 1970 Duster; no matter what NHRA says about cage 3" above your head- ain't enought room to do it.