I have for sale a pair of Z1 525 turbos... I got it when I bought my car, it was rebuilt and upgraded again by Mike Turbo... He put bigger wheels on the compressor and turbine side, It also has carbon seals. I'm asking 1400+ shipping but I'm listening to all resonable offers.... Pics available upon request... I was told it's good for up to 600hp... I'm selling because I'm taking a different route... Thanks for passing by!