Not sure you still need it, anyway, i have 1 used unit which is in tip top condition, no leaks or whatsoever, taken out as I no longer using it (opt for wastegate). Bought brand new from Tong Turbo in April 2005. PM me if you're interested. Thanks.
Nothing to do try to do some research online but seem a bit blur here.
Let say if we have K3VETT with 1 ori IHI RHF4 turbine for pickup and another with bigger size for end power, what will be the advantage...