1971 383 upgrades

Need some recommendations. I know it’s a c-body but hey it’s a Mopar! I have a 71 C-body with a bone stock 383 2-barrel single exhaust. Car is all original only around 35,000 miles. 727 tranny and 8.75 rear with highway gears.

Car probably weighs around 3900 pounds.
What could I do with this motor to make more power. I know in 71 they cut the compression back. I would like to be able to run in the 13s possibly high 12s but 13s is fine! I’m assuming cam, intake, 4 barrel dual exhaust- headers may be a no go on a c-body but I can get hipo exhaust manifolds.
Converter and lower gears? Heads?

I have no problem running 3.91 or 4.30s etc... I can always swap the highway gears back in for a road trip. So what do u recommend? Thanks