The 911T was added to the line up in 1968 as the "Touring" form of the 911. The 911T had the 2.0 liter engine, but with only 110 horsepower. The T was the "base" model, costing 10% less that its more powerful brother, the 911S. As of 1969, the 911T got the 2" lengthening in its wheelbase as did the other 911s. It retained its Weber carburetor while the other 911s received Mechanical FI. 1970 brought on the first engine... displacement increase, to 2.2L. (2,195cc). That upped the output to 125 horsepower. For both '70 and '71, the engine had Zenith carbs, and kept the same compression ratio of 8.6:1.