Comp Cams Xtreme Energy 268 ?s

Sorry for the confusion!

My '71 Dart GT's engine is the original 120,000 mile 318. It is currently in the shop, for what I was thinking was, a stock rebuild. The engine builder offered me the cam/lifters that came out of a 273.
Still wouldn't do it unless you are willing to jump up to a higher stall converter and a 3.55 rear gear or more. The stock 318 manifolds are quite restrictive as well. Put it in with out the right goodies to make it work and you might be disappointed.