Nice build, you sound alot like me...with my G35 throwing tons of $$$$$ and parts at it for huge power and have had nothing but headaches. I have been convinced for awhile a G37 with a simple TT set is the way to go for me. After reading your thread and your opinion on the GTR (I have heard the same from former high HP 350z owners) I think its only a matter of time before I do a G37 with the GTM kit and shoot for the 550-600whp range. Thanks for the excellent write up and honest opinions I have found it very helpful, Congrats on a great looking car with a sick build