In comparison I have a 67 Notchback that is not too terribly different than yours all steel body full interior total street car. 360 stock except .510 hyd. cam, air gap intake, 750 dp Holley, Mopar elect. ignition, headers 3" exhaust dumped in front of axle, 3:55 gears , 904 with 11" conv. One trip to track with no tuning and it ran 13.20 @ 105 running 275 60 15 drag radials. so you are leaving something on the table somewhere.
