I have an NOS set of CH22 headers on my '69 L78 chevelle. I fitted them with the body off and found they needed some tweaking on number 7 tube at the rear of the lower a-arm, and a few other tweaks. I want at least 1/4 inch clearance on all frame points. Achieved that, but it took some full 360 cuts and rewelds. Fit perfect now and so glad I found these at a swap....$40. Love the square flanges!! These were ceramic coated.
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