I have accounts with 2 Garrett Master distributors. I think Tim's is still cheaper and better for our 30 YO turbos.

As for something with ceramic roller bearings what are the specifications on these turbos as I'm sure someone makes something with newer guts. Might drop drive pressures some and move more air at lower boost pressures which will lower egt's and improve fuel economy a bit.

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Mad_Matt's Current Stable:
Oil Burners:
09 Jetta TDI The highway queen @ 105k
83 300D. Sold
Gassers:
16 A4 sport line
10 Passat
83 Recaro Trans AM WS6 Bone Stock Survivor
11 Harley Ultra