JFTR
http://www.1800philes.com/ianr/_superlist_grinds.html
I've used a 'K' with Webers many years ago and it went quite hard, about as hard as a 186S according to the dyno shop who jetted the jugs. The 'K' cam was used on D-Jet cars in OZ.
iPD sell a 'D' grind which is very similar.