Polishing & protecting Ebay exhaust tips

Came though the post yesterday.

Any suggestions or any real need for these to be metal polished first before fitting? Just not sure if a good does of metal polish will help them last longer. Seem very light and cheap - but thats to be expected I guess for £20 sheets
 
I polished mine with a good metal polish, mercury, and then waxed it with collinite a few times, when I haven't washed it for a while it doesn't take any effort to clean them up, just a bit of APC gets them looking like new!!
 
Cheers luke - Will give them a good polish cure and puff with metal polish and see how they last. My 350Z OEM tips would come up fine with a little polish but I guess they were a better material