Is it possible for Mace to provide me the cam specs? I would like to get a cam that's fairly lumpy on idle.

The specs for CAM616, as shown in the link below is 210 degrees of duration at 0.050" of lift. Depending on the intake and exhaust system, these cams would certainly create a nice note on idle.

http://www.maceengineering.com.au/epages/shop.sf/en_AU/?ObjectPath=/Shops/mace/Products/CAM616