One you are not driving the car right. What is the asking price. I just drove an 1978 911 SC. Cars have no powersteering. The clutch is really hard and the brakes are kinda weird if you haven't driven one of these great cars. The engine sound one of the most wonderful sounds that the flat 6 3.2L engine makes. The car is suppose to be a hard ride it's not an benz. You feel the road so much when you steer it. It has a racing gearbox the 915 type. How did it shift?? I would get the gearbox checked out by a porsche shop cause it may seem to shift fine but these gear boxes are tricky. Try to drive it again don't shift til higher rpms until like 5500 or so that's how the car works it doesn't like low rpms runs so much better at higher rpms. Basically all you have told me is just how the 911SC runs like. On that car you will have to just keep up with the engine maintanice and suspenion. Sorry if I said you didn't drive it right but you really didn't just trying to back the old 911 up
Oh yea do the brakes feel like you are not going to stop in time?? All this info is coming from me an 18 year old that has driven a lot of Porsche so far in my lifetime. Even harder car to drive is an 1973 911S or RS last true Porsche by the hardcore fans. Let me know what is up with the car.