this is the reply I got from then about QDII systems.
Hi Philip,
We do have a set for the stock Jeep Grand Cherokee 05-10 that has Electronic Limited Slip Differential or the "Quadra-Drive II®." The set on the website is for stock axle replacement. If you need modified lengths, we would need to know in order to make shafts to the proper length. We do have the product on the web, but the price is not online yet. The cost is $1,995 for the set. See the link for more details.
http://www.rcvperformance.com/produc...=CVJIFS-WK-LSD
Regards,
Dean
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From: "RCV Performance"
Sent: Monday, July 09, 2012 12:51 PM
To: "RCV Catalog Request"
Subject: PHPMailer Test Subject via mail(), advanced
ATTENTION: Technical/Installation department
Name: Philip
City: Everett
State: WA
ZIP: 98208
Comment: Does your IFS CV axels work with a Jeep GC (05-10) that run the QDII system or does it only with the QT systems?