My 70 dart thinks she's fat.

Just curious what diff do you run in that beast?
I'm hoping to go fast, but my car will be driven to the track & home (hopefully)
I'm looking to run an easy 10.50 & super comp capable 9.80s (basically I don't want a new car like a Tesla pulling up next to me & embarrassing me) so that's what I want, a quick street legal car. But since I haven't started yet on the car my plans may change, maybe just go a trailered race car. But then to me it better be running in the 9s with ease to trailer it. How fast is your car ? What does it weigh ? What smallblock are you running ?