Dear Guys please don't get mad, I know these are fighting words in most places...my buddies all tell me that my '69, and theirs', are grandfathered forever, and it's almost a God given right or guaranteed in the constitution to run stock exhaust, but I think the clean air lobby might just clean house some day with a poster child with respiratory trauma...coming after our "rods" next after they are done with the older '80's and early '90's cars that are not running clean. Do you think we will be putting catalytics in our dual exhaust systems someday, or is it a waste of time without O2 sensors and computers etc....'tis easy done, just not cheap...I'm gettin' ready to duck...R.B.