I've found a '71 911T without an engine. Even though the car came with a 2.2 liter engine, I was thinking about locating a 2.4 911S engine/transmission for this car for the performance increase. What specifically should I be looking for to get the most bang for the buck, yet retain some integrity for the character of the car?

What other issues have I not considered in selecting a different engine?

Where might I look for an engine?

What is a ballpark cost?