Originally Posted by 1slow370

Few things i wanted to throw out there:

1. both kits are fairly new with development ongoing on both so if you are looking for as few problems as possible it may be advisable to sit on the fence for a while until things smooth out.

2. the STILLEN and GTM die-hards are like ford and chevy guys throw them both in a room (or a thread) and a fight is bound to break out.

3. on the old Stillen 350z kits, the new kit is a whole different beast, the old kit was terribly undersized for guys that wanted more power than the kit was rated for as the blower needed to be small to even remotely stand a chance of fitting in the hood with only minor alterations. They have learned from the old kit as the new one has a big centrifugal vortech unit.

4. If you decide to go TT i would say the GTM TT is the way to go as it can be ordered in a turn key kit that works fine where as the greddy can't be, and it sounds like you don't want more problems than you need.

5. if you want more power, my opinion is in favor of the stillen kit because vortech blowers are cheap to upgrade, the unit that comes with kit can handle more power than the gtm stage 1 unit, and when you go nuts with pulleys and exhausts the supplied tune isn't going to be an option either way as for safety you will want to have it done on a dyno anyway. get a meth injection system for higher pressures, make sure your kit comes with an intercooler, but in all reality if you want balls to the wall power just go TT because centrifugal superchargers fail completely when paired up against a properly designed TT kit I.M.H.O.

6. if you care about looks they are 2 different flavors stillen has that "look at me I'm totally not a stock engine bay" thing going and gtm looks like you added a CAI when you pop the hood.

I would seriously weigh the options of both kits as they are designed for 2 types of guys, and for better or worse they are both very competitive