Alright, I just received my American Thunder Catback for my Mach 1 today about 1:30pm today. It is the original 2 chamber flows and Im glad because I did not want the delta flows. I was searching the web just for the original 2 chambers and it took me a while to find them. I got tired of the Bassani catback and wanted that old school sound and now Im going to try to sell it. How much would a used Bassani catback go for?