Hi guys, I'm currently looking into buying a Nissan S15 Spec R which has an automatic transmission for $13000 with 159000km on the clock, the car is mint and near factory stock (exhaust and KN panel filter), is this a bad deal and also I've been informed there's an OD (Over Drive?) and power mode button on the automatic transmission, does either one of those make the transmission shift at high rpm or redline?