need help I'm currently running Chevrolet headers on my 78 4 door but they are a less than perfect fit and a nightmare to install I'm pulling my motor back out later this fall to install a 496 rotating assembly and would like to find a better header option.i have found big block body headers but there almost 700 dollars is this my only option or is there a cheaper alternative that I'm missing here?i appreciate all the answers in advance!!!