I'm curious about a couple of things relating to the clutches used in current screw blown FC's, as the RPM's and loads with those are probably similar to what we should expect in our screw blown Pro Mod. What brand and size seems to be most common? All aluminum construction, or a mix of alumininum & Ti construction, or all Ti construction? Any special considerations regarding rear main protection (ie: clutch balance, or clutch buttons against a hardened motor plate insert, or external lube, etc). Will soon be buying a complete new clutch pacakage for our deal, and would appreciate any feedback or experiences either regarding the construction or potential vendors. Thanks.