jpfrogger Posted January 30, 2008 Share Posted January 30, 2008 I am looking to buy one of these NP231 doubler kits. Does anyone here have any experience with one of these kits and their installation into a Comanche? I am also having trouble trying to find where to buy one of these kits. It appears that the DD Machine kit is the least expensive at around $399 but where do I find where to buy it. Anyone have any input? Thanks in advance, Tom Link to comment Share on other sites More sharing options...
LEAD_NOT_FOLLOW Posted January 30, 2008 Share Posted January 30, 2008 I have experience with the DD Machine Box4Rocks kit. It's not in an MJ, but in an XJ. I do not have any experience with the Madrooster Off Road kit. The Box4Rocks kit is defiantly a nice setup. We used it with a Dana 300 / NP231 doubler combo. Worked perfectly. The Box4Rocks kit I believe runs right at $399, where the Madrooster kit is more expensive at around $100 more. As to why one is better than the other I have no clue as I've not researched them in depth. As far as getting them, here is the info I can provide for you. D.D. Machine (ask for Duffy) (360) 779-2500 dd98370@hotmail.com (I believe he has Yahoo Msg. as well under the name of djld98370) Madrooster Off Road (ask for Phil) (559) 232-5566 madroosterfab@yahoo.com or desertcj2002@yahoo.com (I believe he has AOL Msg. as well under the name of ieffed) Link to comment Share on other sites More sharing options...
jpfrogger Posted January 31, 2008 Author Share Posted January 31, 2008 Thanks for the info. I will contact them. Anyone else with experience please feel free to comment. Tom Link to comment Share on other sites More sharing options...
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