Where to start on repairing this Demon???

I would hang,adjust and alighn all the front sheetmetalto where it fit perfectly then see what can be done to make the rear sheet metal come out as nice as you did on the front sheetmetal...nobody says you cant do it better than the factory yo might check fit the 1/4's during this process using lumber to support the rear panels. you have the makings of what could be an exceptional car