Hey call off the dogs! Found what I needed.
As some have read, I am trying to install a Mean Green High Amp Alt on my 2007 KJ.
Well it seams that chrysler in the infinite wisdom decided to change the plug for their 3.7L gasser engine alternator/generators. They went through 2006 with one plug and just as they plan to mothball the KJ they change plugs.
Unfortunately Mean Green did not get the memo. SO I had to try to track down a 2006 or earlier gasser and confiscate the plug.
Found a 2005 Sport and scarfed the plug for just a couple of bucks. Now I have to splice it on my harness and pray I don't fry anything.
Thanks all for the potential help.
Hope this is helpful to some other poor 07 model owners.