I think i found my problem, bad headers? What do you think.

Im not sure what brand mine are because they came with motor,but the passenger side header hits the idler arm also on my 72 Duster

streetdak, i'm not a expert by any means but i have to agree with you on them looking diferent. is it possible to modify headers while in the car. such as heating up with a torch and bending them. im not sure if you bought them used put maybe the person before you did something to them.

any ways good luck in finding your answer to the problem.