I'll go a step further and say back in the day, I ran cheap cyclones and what not pretty much year around. Lasted several years and looked terrible but never "had" to replace them. Maybe the cheapo's were better than the cheapos of today??? IDK.
My first ever set of headers were cyclones, they were on sale for $39.95 from the Ramchargers. I can't remember what the shipping was. They lasted several years until I ran the duster under a dump truck, but that's a story for another time.
