good luck.i've tried several times to find a place with no luck.did you just rebuild?are the components independently balanced(shaft is balanced by itself,and compressor wheel is balanced by itself)?if so,the two don't have to be in any certain orientation,and you can get by without rebalancing.you can usually tell this by the compressor wheel having material taken off the back side,as well as material being taken off the hex nut portion or backside of the turbine wheel.basically,there will be balancing marks on both pieces.
chris