Always prepared to make a splash with new products, Bassani Xhaust [(866) 782-3283; www.bassani.com] had these adapter plates at PRI. Big deal, you say. Yes, they are. These adapters enable you to convert to round-tube headers for big power gains. They're designed for 351W applications, but will not work with heads featuring raised ports. The adapters feature flat Allen-head bolts, and they don't require a gasket. Just a little silicone around the ports is all that's needed to form a seal. To bolt headers to the adapter plates, Bassani includes individual gaskets for the headers.