Best 273 and 318 builds (NO 360's please)

Years ago (1968) to be exact I used to race my 67 Dart 270 273 Power Pack at Englishtown Raseway Park. I ran in the SS/MA Classes and the Best time on record was 14.2. The engine was untouched except for reversing the Pistons, and stiffer valve springs (Had to change them out every three weeks,or the RPMs would fall off.) 411 gears and I modified the Valve for the reversed shift pattern, Hooker Fenderwells and Goodyear Slick. It was my daily driver, but every Sat night I would tune it up and off to the Track Sun morning. Where I would throw on the Slicks , un cap the headers and go racing. It was a cosistant class winner beating the Mustangs, 326 Tempests,327 Chevys and the 396 Impalas Conv I would face. 273s can be made to run with little work and fun to drive also.