using chrome parts

Use Alclad. You'll never use anything else.

Okay ;

   I give . But what happens if you want to polish it say a year from now ? No one has mentioned that !  T.B.

hi,thanks for the replies, i might try the foil. sorry for not getting back to you all sooner,busy with the work thing.

Try painting some Tamiya clear smoke over the chrome.

Its a quick, easy, cheap method.

If you don't like it you can still go with the methods above.

Al-Clad Chrome will be a good option. High gloss perfect surface with a coat of high gloss black and a light coat of Al-Clad chrome

i did the same as you on motorcycle exhaust system and the painted it with Al - Clad and it looks like this 

I use Alclad.  Both their chrome and polished aluminum colors make a good chrome look.  The secrets to using it are to have a flawless gloss black undercoat, and airbrush it on in a very thin coat.

You can use Bare Metal Foil over te sanded areas, just make sure you sand the areas as smooth as possible.