Your's very similar to my old 406. The biggest differance being the heads, I had Canfield 197's and a small solid cam, and 373 gears. I ran 12.20's in a 72 Monte Carlo 3800lbs. My recommendation would be to maximize the torque, there is only so many 6500rpm run's in a stock bottom end.

'76 2 bolt block .30 over studded main's
stock crank turned 10-10
5.7 rod's resized
cast flat top's (less weight)
Lunati 501-508 lift solid cam
Canfield Aluminum heads 2.05 valves
1.6 intake 1.5 exhaust both crane gold
Performer RPM intake w/ 750 vac. sec out of the box
MSD dist, 6al box
t-350 w/TCI street fighter converter foot braked to 2500rpm
12 bolt with 3:73's
BFG drag radials

Best 60' 1.69

Ron