Hey im working on a 72 Dart Swinger. I have a few issues I would like an opinion on. First off the unibody is tweaked and needs to be straightened. I am going to put a BB into the car, I know that when going to a heavily built BB there are issues in breaking the unibody frame. So what are your opinions on getting the unibody straight again? Also since I am already going to have to strengthen the cars unibody, is it really that big of a problem money and work wise to straighten it?

 

Take it to a frame rack (Maaco does this cheap) and have them pull it straight or check to see how far off it is. Weld in some frame connectors and go for it. These cars have been raced hard with big engines and have done so without any problems for years and years. If you are honestly going very big, weld in at least an 8 point bar and you'll be fine. My car is launching with about 800 hp this season and am anticipating no problems....Famous last words.