I ran the on3 FF kit...and as far as the piping goes, its ok, you just at the very least should make sure the v bands are flat and buy some RPS v band clamps before installing the kit.
Dont use any of their gaskets and make sure to do something decent with the oil relocation setup, dont use fittins/hose/clamps.
There is 2 ways of looking at it.
You either go cheap all the way, stick with on3 turbo, gate, and bov and it should be ok if you take care of the other issues.
If you plan on upgrading all the components of the kit after you factor in the price of all the tubular shit and upgrades you're really not far off a Hellion tuner kit which comes with solid components and all the tubular front end pieces with coil overs so thats something to think about.
If you plan to upgrade everything I would say go Hellion.
FWIW, I upgraded all the components and dicked around with leaks and issues for a while and if I were to do it over again, I would have just spent a little more cash for a hellion setup.
Another thing to think about is if you ever decide to sell the car or pull the kit off it does look a lot better to have a hellion kit on the car and a hellion kit will probably have a lot more value than a used on3 kit.
The used on3 kits are almost scrap metal on the second hand market haha