will be getting my 69 done soon. been ten yrs sitting.. little specs. 351w stroker to 402. 550 hp with 535 torque.. 460 ft lbs @2800 so this motor is going to run.. c-4 full roller manual reverse.10'' jpt converter and trans. 3.89 true trac rear. now exhaust? FPT 1 \3/4 headers with x pipe into 2.5 tubes.. has 2 chamber now but not sure if I want them on again.. did sound good with the older combo.. now that I have more power what are you guys running for street car? so many now since I last drove this car in 2005? any help will help 2.5 or 3'' which muffler? best flowing no drone? thanks..