I've got an HP kit that I am very happy with. However, I do not recommend them because of poor customer service (they're swamped), and ridiculous turn around time on orders. I waited 6 months for my kit. Fortunately, I was deployed anyway.
Hellion will probably be the best for quality and fitment.
On3 i probably wouldn't take if you gave it to me for free, i've seen 2 kits and they fit horrific, and if you search around you'll see that it happens fairly often.
When it comes to turbo setups, you get what you pay for, and i assure you, if it doesn't fit and you are doing a home install, you probably aren't going to be able to fix it yourself.