I'm running flipped manifolds on my twin Garrett GT3071R's. As mentioned earlier if a couple of your posts, if your considering twins, accept a realistic budget of $7-8k or give it up. I did a majority of my build with used parts and I still broke $6k once you factor fuel, exhaust, tuning, etc. With the cost of running two very expensive turbo's, you need the rock solid advice of a professional. You will drop over $3k on just the turbos. I know I couldn't afford to pick the wrong ones.

That said, IMO, if your looking for something fast, go with a single. If you want a daily driver with instant response and the ability to make 800+ RWHP, go with twins. I've driven both and wouldn't consider a single for my heavy *** truck. I like having all my boost a 2500 rpm with anything more than 1/2 throttle.

If your serious, I saw that Rick @ Synergy is selling his shop truck's kit. If I had the money, I would be all over it and just sell my current kit. His shop truck breaks almost 850RWHP on just a 5.3l. Same turbo's as mine but SS headers instead of flipped manifolds. He picked up over 130 more HP over my kit (some of the extra HP was from running 18lbs vs 17lbs).

https://www.performancetrucks.net/fo...ighlight=twins

My current setup:







Rick

 

^nice kit

 

been a few months.... BTT

 

heres a couple pics of my setup,nothing pretty here,i need to clean the cluster **** of wires up.also my ic is mounted different than most,its actually in the engine bay between the frame rails.

 

That must keep the cold piping pretty short so I bet it helps with spool time. How are the AIT's?

 

here is mine



Stealth intercooler

 

yeah the piping is pretty short,iats are pretty good the couple times i checked

 

only bad thing about it is that i cant get the fan shroud in there,i might be able to find some very slim efans, but the ls1 efans i had wouldnt fit either

 

Twin To4b's with intercooler and 46mm wastegates complete standalone oil system!

 

Damn that's different