Allan's rims

Hey allan,
where can you get those rims on your white sv i am starting to like them alot and interested, what site or dealer can you get those rims from?
http://www.lambocars.com/highres/diablosv45.jpg
are they the "DTS GT" rims from this site:
http://www.saclassics.com/index.php?page=wheels

My wheels are stock SV wheels, just chrome dipped.

so they were aluminum before?