turbos

[mac2]

hi chaps have just removed the turbos on my 03 rs6 as n/s went puff . the o/s one looks quite new but have been advised to change both as they are supposed to be paired ?. does anybody know the part no.s for the turbos from audi or can anybody have any suggestions for another make. at the minute the car is standered but may chipped it in the future when i save sum money.