I've been playing hell trying to find a 5-spd for my 98' I30 and so finally I found this place in Florida (
http://www.transpowerfactory.com ) who will track down the transmission you need and ship it to you. The guy priced me out at $700 to $1300 depending on if it's rebuilt by them or just taken from a car and shipped. But I asked him about maybe finding a Maxima 5-spd because it is essentially the same car. He told me that even though the Maxima and the I30 are identical mechanically, the axle from the Maxima 5-spd will not match up with the I30 differential. The axle's are off just enough to not allow a swap between the two cars. Maybe some of you already knew this, but I've never heard or read anything about this until I called the Power Factory. I was always under the impression that they were the same car except for the LSD in the I30. Well, I hope this helps any I30 owners out there.