For a low buck 318, I'll share the 318 build in my sons 73 Dart. 73 original 318 maybe 60,000 miles on it. Factory AC, black and white cloth interior and disc brakes. Added 15 x 6.5 B-Body Rallyes and front factory sway bar. We got it with 30,000 original miles, he is the third owner. 273 Commando intake, 273 4295s AFB carb and choke, 340 distributor, stock exhaust manifolds, custom dual exhaust, Cloyes double roller timing set, Mopar Performance HFT cam and lifter set P4452757 (.410 In and .425 Ex x 211 In and 218 Ex @ .050 on 110 centerline), 727 trans, factory 2.76 gears in a 7 1/4 Sure Grip. Runs out real nice highway cruiser and gets 20+ mpg.