My 1972 911 R. Twin plugged 3.0 liter running MFI, custom cams of my own specification, ported heads, etc, built by yours truly "at home in my spare time". Guard limited slip, 22 and 29 mm torsion bars, Tarret 22 mm sways front and rear, wide A calipers on the front, ST style dual front coolers, 100 liter tank, and on and on.