The red cars are roller projects, a 74 S and a 72 T. The 2 blue cars share daily driver duties.
I bought the 911T with a rebuilt CIS 2.7, not my idea of a great hot rod engine but it runs good and has plenty of torque. My only advice would be to stash the original engine if it's numbers matching. Also, I prefer carbs or MFI on the early cars....