you shift
Back wheel drive
Back wheel drive
You will need to change the gearbox, swing arm, back wheel and, probably, brake arrangement and shocks.
Front wheel drive.
All are either rear wheel drive or four wheel drive.
The center shaft in a 2-wheel drive transmission is shorter then a 4-wheel drive transmission because the 2-wheel drive does not have a transfur case on the back of it. NOW, You can take the center shaft out of the 4-wheel drive trans. and install it in the 2-wheel trans. and it will now work in the 4-wheel drive vehicle. To change the center shaft requires both transmission to be taken all the way apart.
front wheel drive
Yes the 240sx Is back wheel drive, but its called RWD or rear wheel drive. Meaning the rear tires move the veheical
Need to know if 2 wheel or 4 wheel drive for the front. Either way, there is no nut on the back axles.
back up a few feet
Depending on the vehicle, the 4 to 2 wheel drive actuators could be a mechanical cable, electronic solenoid, or a computer controlled switch. If there is a button to push for the change, then run a check of the computer codes, as a problem may show there.
most of them are...