Just thought I'd start a thread on my upcoming winter project.  I got my 240z in May of last year. The car was nicely restored in 2010. I've done a few things to it in the time that I've had it including, wheels/tires, headlight covers, lowered it, ST sway bar kit, pertonix ignition and the most significant is that I converted the car from an auto to a 5 speed about a year ago.     The L24 in the car has had an head gasket leak of oil to the outside since I've gotten it.  I was going to put on