engine build for reliability
318 stock rebuild.
340cam
Performer intake.
600CFM Edelbrock or whatever carb you feel comfortable with.
Dougs headers and some nice duals.
81/4 rear with some 3.21:1 gears.
Stock electronic ignition system,just keep a spare ballast resistor in the glovebox.
A stock rebuilt 904
Thats pretty much the drivetrain in my Duster during the first summer i owned it except i had worse headers but it was dead reliable,ran very nice and pretty darn fuelefficient all at once.