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I am not sure about installation, but I did hear the automatic trans does have quite a few problems with it. I believe STU has one in his RR.

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Hmmmmm ....Stu's problems were a bracket that fell off, and the computer needed to be programmed, other than that I recall him being very happy with his Keisler AOD4......

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Calling it an AOD4 is a little confusing - an AOD is a Ford O/D trans; the Keisler kit is based on a GM 700R4/4L60 style trans. I haven't done any of the conversions into Mopars, but I have done quite a few in GM cars with mixed owner satisfaction. The 1-2 gear spacing in a 700R4 causes a larger RPM drop than a T350 (or a 904/727) which some owners didn't like - they would end up using a looser converter than usually needed to cover it up. Lockup converters are inherently heavier at the cost of throttle response. I've been considering putting an O/D trans in my Spirit and I'm leaning towards a GM 200R4 - ratios are more evenly spaced, non electronic, and a smaller package.