I'm running the 12psi pulley and consistently getting 11psi under load. Yes, there are two paxton kits, one for the 4.7L Durango and one for the 4.7L RAM. Just keep in mind you will need a method of tuning either kit.

Here is the system for the 4.7L Durango.
http://www.paxtonauto.com/pdf/manuals/4809632.pdf

 

Wow your pushing some crazy amounts of boost for that motor!!!! My gt with the 4.6 can only handle 9-10 Lbs of boost....after that they say its time to look into building a bottom end lol. So hows the stock tranny holding up? I know the guy running 125 shot of NOS says his is holding up just fine which blows me away!

 

Below is my A/F from my last dyno. Next year I will go Ross pistons and scats. I will then switch to the 15 PSI pulley. Richie on bionic dodge is runnnig the bigger pulley.

My Dyno A/F and boost.

 

Nice man. Your going to be pushing some serious numbers after all that is done to it. How is the transmission holding up to all this added power?

 

Tranny has been fine. I get mad wheel spin but as soon as I take off, the engine throttles down. We are working on that one now

Only issues is motor mounts. My engine is generating more HP than they can handle. I'm in Ft Lauderdale right now, but next week I will install my custom motor mounts. Next week will be motor mounts, 2-stage alcohol injection and I'm headed back to the dyno. I have already received the richer tunes from Hemifever. I'm expecting 350+ RWHP.

 

350 is the number for now. This winter, I'm going forged pistons, scats, crank and installing my 4.10 gears. Maybe even a detroit locker. Once I've beefed the internals I'm putting on the 14-16 lbs pulley. I would also like to get Air-ram's aluminum intake up and running. Once I do that, a heavy shot of NOS.

 

Me neither, this will still be my daily driver.

Almost every day I have one try me The most recent was a R/T Charger. Its shocks them when my truck hits WOT.