Roll bar/ Roll cage Kits

I have a '65 Dart that has a 6pt roll bar kit installed. All the welding was wrong and I have to replace it. The kit in the car was too tight along the side door panel (you could not operate the window crank) and the height of the bar was so short that a 3" tall piece of iron was used to mate the bar to the rocker panel/ floor. I also need to place a cross bar in the front since the tranny hump and firewall were modified. This is for a track only car. So I need help to find a kit that really does fit this body style. Thanks