Not really.
No
Yes.
The 4 wheel drive switch is located on top of the transfer case
Yes. If you look at your 4 wheel drive lever, it will say "All-Time 4 wheel" or 4x All Time".
Both are options depending on the year and what transfer case it has.
No...it's all-time 4 wheel drive.You would have to disassemble the drive shaft ,which in turn would leave you with no 4 wheel drive at all.
there are 4 catalic converters on a 1992 grand marquis
Sure, just don't shift it into 4 wheel drive...
No. It is 4 wheel drive. When it is not in 4 wheel drive it is rear wheel.
Shift the 4 wheel drive lever into 4 wheel drive.
Look for a driveshaft going to the front.