no idea what a C2J cam is, that was a C3J, no idea if that's different or not, but Miller thought it would be an improvement on a GTT cam and had the good sense to let me measure it first, as it came out it has less duration than the GTT cam, and would have been a backwards step. If I learnt one thing from measuring all those cams, it was to trust noone and measure everything.
As an aside I measured a cam of Rob@backyard, same duration as the GTT cam I had but with more lift, this leads me to believe that not all std GTT cams are the same.
it's possible, Rob thought it may be an EP cam, seemed too mild to me for that. Maybe GT Tuning were talking about the piper 270? that would fit the description. Any idea why a PH2 makes 120hp and a PH1 115? I wish I'd measured my cup cam before getting it cut, that would have been the best of the standard cams as it was an expensive Prima lump (no woodruf key in the crank to allow the timing to be tweeked...)