well you pretty much just took everything i was about to say in your first post. and you got to the FAQ before i did! i was just about to start one when i came on now, and i see you've already got it going. good on ya! smart minds think alike.
Skyline engines - will they fit in my 240SX??
yes. RB20DET, RB25DET, and RB26DETT will all fit into your 240SX, each with a different amount of modification. The RB26DETT requires the most work, because the twin turbos will not clear the steering column without modification. the other 2 require smaller levels of modification (different engine and tranny mounts) in order to fit in your car.
oh, and for most questions you could ask,
GOOGLE is your friend.
