If you want reliability, get a Greddy kit.
If you plan on boosting more than 12 psi, then get a Drag turbo kit.
The Drag turbo kit utilizes a T3/T4 turbo. It takes a little bit longer to spool up compared to a Greddy TD04-15G but it will produce more top end horsepower, and it's more efficient when producing lots of boost. The small TD04-15G starts to become inefficient at around 12 psi.
It all depends on your goals.
I went with the Greddy kit because I wanted it to pass emissions, fast spool up, reliability, and only 8 psi.
that's what I got, and I couldn't be happier.
good luck,
aj
