There is no such thing as a 1991 Chevy Celebrity
Yes
5 qts
yes
Pull the old fuse out and put the replacement fuse in.
yes
Yes, if it fits the holder.
1991 to 1992 rs or z28
Yes you can.
Not without fabrication.
The transmission oil goes in thru the dipstick tube.
Master cylinder. Mounted on the firewall, driver's side.
10w30