stepped tube headers scavenging exhaust port and speed up the valocity of the exh gases.

and for one i read engine masters out of all the mags...u really think u are the only person on here that has talked to some of the top engine builders in the country..come on now..and yes pretty much rule of thumb is u make 7 more hp for every 100 on a engine when switching from race gas to alky on an engine..but i'm not here to get into a pissing match..

please back up your statement with the exh valocity being speeded up by adding a wrap on the out side...because if it truely is so i would like to read and learn more about it..but from every one i've talked to ceramic coating is the way..