On the back part of the engine behind the air cleaner housing
Yes
Not very for a mechanic. If you want to do it yourself get a shop manual. Make sure the negative battery terminal is completely disconnected. It just involves removing the air cleaner, distributor cap, and distributor hold down bolt (pretty sure is a 9/16. Also, are you sure you want to change the distributor? Did it fail, my 89 Caprice Brougham's distributor is fine. If you are getting bad ignition it is probably not the distributor. Check for cracks.
The 305 was standard in an 89 Caprice Classic, so the answer is obviously yes.
yes
Yes
r12
A Caprice steering column can be replaced by another as long as it matches. It if comes from another Caprice of that year, it will fit properly.
In a 89 Chevy caprice, your fuse box is located on the driver side under the emergency brake and trunk release switch.
you dont
1,8,4,3,6,5,7,2
No, it's too wide.
Yes