My car is a genuine 590-600 hp it's lighter than yours but you should be going at least very low 10's
at least 128-9
Mick


69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36