What has your street 340 and 360 combos ran in the 1/8 & 1/4 mile?

Pretty sure I read somewhere that the darts had a longer wheelbase than a Duster did so that would add some weight if true. My sons 1970 (360) Duster weights 3200 pounds with him in it. That’s with Edelbrock heads and an aluminum intake. Pretty sure he weighs around 150-160 pounds. He cut the trunk wheel tub out and replaced it with steel sheet. No heater blower or windshield wiper motor. 8 point mild steel cage and frame connectors added. Caltracs and mono leafs. The only fiberglass is a heavy 6 pac hood. One race seat and one stock bucket seat and rear seat is still in car. Stock frontend.