[DeTomaso] ZF POLISHING

[LEVITT1946 at aol.com]

Hello Friends ,
 
I would like to begin polishing my ZF Transaxle since it is currently out  
of the car .The ZF is 37 years old.The outer Casing has what looks like 
stress  marks or scratches on top.   
 
Does anyone have any hints on how to polish to a mirror finish  ?  I really 
do not want to take the whole unit apart. 
 
What tools are needed?
 
What sandpaper to start with ? Emory paper ? Wet Sand ? 
 
What air tool is best to use ?
 
Robert
Team Pantera Racing # 3196
Gumball3000 #56