This 1971 Porsche 911T has been completely restored, and had some performance upgrades as well.
The engine's heads have been reconditioned.
The original Zenith carburators' 27.5mm venturis have been replaced with custom-built 32mm venturis. (These 32mm replacement venturis are available from Terry Worick Resorations.)
The engine's T camshafts have been reground to the more agressive E cam specification.
The end result is a nearly pristine 911T, with all mods undetectable. At an estimated 167 flywheel horsepower, the result is competitive with a same year 911E.
See additional photos at Flickr: 1971 Porsche 911T Ivory