:12dunnomy 92 240sx is an automatic. my question is would it be more beneficial to rebuild my current tranny with high performance gears or go with a jdm automatic tranny. one of my boys is telling me to go jdm and one is telling me to rebuild it and the rear-end. i'm going to be replacing my current ka24de with an ka24det that my boy has, but i want to eventually install an rb25det. so which way should i go? any opinions would/will be greatly appreciated. thankx!