My '81 267 has plenty of power for just driving around town but I think it lacks in it when your on the highway. Also, when you get on it a bit, it takes a second or two to really get going. What can I do to liven up the motor without totally rebuilding it and still keep its good mileage and every day drivability? I am planning to put true duals w/ dual cats and Flowmasters on it when I replace the exhaust. What else can I do?