[Don T.]

I've got the Dynomax headers (Advance Auto's where I picked them up) on the 327 in my GMC and they seem to do fine. I had some issues with the plug wires in my son's 67 Chevy until I used some looms to pull everything away from the headers but still keep them separated enough to prevent cross firing. I think they were around $100 or so... paint burned off rapidly, though. Next time I buy a set I'll go for the ceramic coated ones instead; I just needed something I could slap on it quickly to move it around without complaints from the wife. The old exhaust system consisted of headers that no longer had colectors (rotted away) or anything else to quiet it down!