When I put together my K03 1341cc it was the first one, I took it down to Steve for mapping at the same time as John Marchant's old Mk1 K03 1272cc was there. Steve'd had a couple of 'turbo' cams made up, having tried a 3F cam over a PY one on my recommendation but still finding it lacking.
As far as I know John got one cam, and I got the other. Whether the other 'turbo' cams Steve had made are the same spec I don't know.
I asked Steve the spec at the time, and on multiple occasions since. I believe the lift's around 10.5mm but that's all he'd say. It pissed me off really, as if I'd wanted to copy it I'd only need to send the cam to another manufacturer and it'd be job done. I wanted to know so I could try a few different cam profiles, as although it worked I wanted to experiment further.
Note that ze Germans seem to use a Schrick cam, which depending on the Newman specs, I was going to give a try.