996 and 997.1 Turbos use the Mezger engine. The 997.2 Turbo moves to a direct-injection engine and PDK, which changes both the feel and the price.
Tiptronic and PDK cars are common. A 3 pedal Turbo is scarce in every generation and priced accordingly.
Coolant pipe repairs on 996 and 997.1 Turbos are a standard question to ask before an inspection.