The main problem w/the Ebay T3/T4 hybrid turbos is that they are more for smaller 4 cyl engines, hence, small turbine wheel.There going to choke your exhaust flow bigtime!
I have a Turbonetics T3/T4 Hybrid 62-1 BB stage 5 turbine wheel. .70 compressor A/R & a .83 A/R for the turbine housing, I also have a .63 turbine housing.
I bought the turbo for my Syclone but decided not to use it . So I am just going to stick it on my Camaro.
The turbo gets real close to the steering box, not the steering shaft. Thats why my downpipe is made this way to clear the steering box.
I am going to install a rack & pinion steering set-up which will give me a lot more room & save weight.