headers 440 dart

This question has been asked over and over on here, but still looking for the correct answer. I want to put headers in my car (non firewall) other than the $800. sets that you see on the internet. My car has a 4-speed as well. There has got to be a more reasonable set out there. If using the B-body headers will they come in contact with the z-bar and will they clear the shifting rods?