Someone with a couple extra bucks seriously needs to man up, hit a junkyard, grab some 300zx suspension, and see if it fits. There was a thread about it a while ago, some dude said he measured them, and the mounting spots were all the same, but it was about 1" shorter. So...stock Z suspension = 1" drop? One of us MUST be be able to come up with the money.
Heck, I'll take up a paypal collection, I can probably get one of my buddies to send me a stock piece from a parts car.
