i dont know if youve seen this yet or not but canton came out with an expansion tank for our cars that can be polished
http://www.cantonracingproducts.com/tanks/expansion_tanks.html#80231
This aluminum Mustang coolant tank is a direct bolt-in replacement for '94-'95 V-8 Mustang's. Tank features 1/4" barbed bottom inlet fitting, clear tube level indicator, and extra top vent port. Billet aluminum top accepts stock cap with sensor.
http://www.cantonracingproducts.com/tanks/expansion_tanks.html#80231
This aluminum Mustang coolant tank is a direct bolt-in replacement for '94-'95 V-8 Mustang's. Tank features 1/4" barbed bottom inlet fitting, clear tube level indicator, and extra top vent port. Billet aluminum top accepts stock cap with sensor.


that didn't take long