Advance Adapter no longer lists an adapter plate, that was the first site I checked to come up with an answer
Give em a call. Here is the adapter plate needed in a kit. http://advanceadapters.com/product/3181/Adapt-Dodge-29-Spline-NV4500-to-Jeep-Dana-300-%26-GM-Small-Block-V8.html
I did the swap in 2007. I think AA charged me about $270 for the plate with shipping.
