Little Help Please

1970 Duster full body, full interior, not sure of weight. Guessing around 3200 with me in it. 360 not sure of compression but does run well on pump gas. J-heads no porting. 2.02 valves. Mopar purple shaft 284/480. 727 tranny 3500 stall. 8-3/4 with 391 gear. 750 holley, edelbrock performer rpm intake. Mt Et Street They radials they measure about 27.5" tall. Hooks real nice. Elevation is 1037 feet at the track. Have been told with this combo, that it is quicker than it should be.