My JCG has a model number 247-J transfer case. Is this a difficult rebuild? Where can one buy all the parts for it?

I've only ever rebuilt a couple Np231 and np241 t-cases neither were very difficult for me but mechanical abilities can vary. all you really need is a set of standard and metric sockets, grip ring pliers, at least 2 flat blade screw drivers, and some parts cleaner and Black high temp RTV..... here's a web site for the kit though and i have personally ordered from these guys before.
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[URL]http://racetransmissions.com/store/product_info.php/cPath/304_309_444/products_id/826 (http://racetransmissions.com/store/product_info.php/products_id/826)
hope this helps