Carb rebuild kit ordered!

I just spoke to Bruce at zTherapy (www.ztherapy.com) and ordered a carbuerator rebuild kit for my 3-screw dometops.  He'll be including SM needles which he says will lean out the mixture at idle and richen it up at speed.  Apparently back in '73 this was one of the first major performance upgrades that racers of 240z's would make.  The OEM needles (which I have in there now) do the exact opposite richen at idle and lean at speed.  This upgrade should be good for performance and emmissions.  More to come once I receive the kit and begin pulling everything apart.