budget street motor 360 or 383 for 71 duster

Skip the MSD & use the Pace Performance ready to run distributor. Same stuff at a cheaper price. Talk to member Johnny Pace.
Use the RPM with a 1 was inch spacer.
Next size up cam.
TTI headers/exhaust

Step 2
Extra money left over, port the heads as far as you can.
When that’s done, use the proper stall converter and gears for the task at hand.

Step 3, kick his ***.

Class is over, your good to go.