They're an Alfa Romeo NA lobe which uses a 32 mm base circle (stock lifters). Camtech grind them up.
I'll get the specs one day and post them up. But what we wanted was short duration and biggish lift with an agro ramp rate. HKS step 2 springs wernt enough to keep the bucket on the lobe with anything more than 19 psi and 5700 rpm iirc.
After spinning up a JUN 264 at 10.5 and Tomei 270 at 10.25, Yavuz located this lobe and used it.
There is another set. 262 at 11.3 iirc, once again with an agro rate.
I'll get the finer details next time I'm out there (if he is ok with making the info public).