on my 79 malibu bracket car im currently running long tube headers 3 inch collectors with 2.5 inch exhaust all the way out behind rear tire with flowmaster mufflers.....im making some changes getting ready for this racing season thinking of doing away with full exhaust but dont want to run just headers i want to get the exhaust exiting behind me so its not so loud in car (i like to hear my motor) im thinking of coming off the header with a 3" pipe and going back and turn out right before the rear axle...i was first thinking about just doing a straight pipe but after doing some searching and reading im leaning towards running a 3" x-pipe ran as i stated above no mufflers dumped before rear axle .....whats your opinion straight pipe? x-pipe ? h-pipe ? or............? pros/cons if any ?