Finally got to install the springs and spacers. Wanted to wait until I had everything so I could do it in one shot. Used this writeup and it went very well:

http://www.g35nyc.com/forums/showthread.php?t=470

Rears were a breeze, fronts were a PITA! But now I know what all it entails and I could do it a lot quicker. Some pointers for anyone wanting to do this themselves is break the strut bolt loose while on the car. Makes it easier when it is off. Also I did not have to compress the strut while installing back in the car which was nice... but I did have to compress the spring before I could remove it!

I did a lot of searching and since I have the sport package I wanted to keep the spring rates near what I have now, no sense in down grading! I found the RS-R Down springs are great. The RS-R Down 350Z springs are linear and have about the same spring rates as the sport package:

They are also .6" Front/rear so on the G thats around 1.1" drop. Thats what I wanted, not an over kill but also a nice little drop. I also do not have to bother with a spring mount mod which is nice as well. I know I will need a camber kit so I am now going to go shopping for a good A arm set, and then a SPC rear camber kit. Getting an alignment in 2 weeks so we shall see!

Overall I am impressed. The ride is about the same! The spacers are 15mm front and 20mm rears. Love how they look on the car too. I got them on nice and tight, I hope they are ok I am a little nervous about having wheel spacers on. I actually bent the key getting them on. Just wanted to make sure they were on tight. Didn't go crazy or anything so I hope they are ok. Here are some quick pics, sorry about the lighting it was getting dark. Will get some new pics in a few days...

looks good, now you can help me once i get mine haha

yes do post some pictures..

I can lend a hand. What are you going to get?

More pics...