Sts kits work just fine. I was putting down 500rwhp on my 5.3 at 8psi and no I/C. If 500rwhp is your goal that can be achieved with a Radix. If you want more turbo would be your best bet until the new Maggies are available.

 

You can get 500 rwhp and keep it super reliable with a maggie. Especially when the new 112HH becomes available. bolt on the blower, pully, a set of LT's, heads and cam and you will be there.

 

quicksilverado was that sts turbo the 88mm or the smaller one

 

And with the STS you don't need anything other bolt-ons. If your goal is 500 at the rear wheels. I feel you will need alot more than just a Radix. If you want 500 at the crank, any of these kits will do that pretty easy. I'd think about it like this, Do you want a turbo or supercharger? if you want a supercharger, or any other type of FI kit that is not a turbo. Then ya, the RADIX is the one for you. If you want a turbo, the ask yourself if you want a front mount or rearmount. Allen Nelson did have a front mount that looked pretty good a few weeks ago. Maybe you will want to check in to that.

If you do a bit of searching on the livernois kit you will see how close I was to getting that rather than a STS kit....

Here is some little crappy facts for ya. The 5.3 pistons mostly 5, and 7 Does not like KR and boost. The 4l60 trans will need to be built or replaced with a 80e if you ever want to drive the truck....
Good luck, and start weeding through all this info that has been posted.
BTW, IT'S WORTH IT!

 

I would check out Trick Performance's kit, they're a sponsor to the right. ---->

 

I would go with the TRICK PERFORMANCE kit as well. I have heard nothing but good things about it.

 

ive thought about all this **** a hunderd times in my head do i want turbo or super rear mount or in the engine bay and i finaly just decided to look for some help from other people like yourselves that have done this before. 4l65e is also a good tranny swap cuz i know that the 4l60 will be junk fast. i like the looks of that trick performance kit a lot.

 

Basically 4L60E = 4L65E. A few parts changed but not enough for what you will want unless you get a level 5 custom built.

 

What are your goal kp AT the REAR wheels?
What about E.T, any goal?
Do you tow?

 

It was the same one I'm using now. A gt-67.