Hi Jordan
I've tried over the years to have both intake and exhaust manifolds fixed. Generally it doesn't work. They fail again after a few years.
Did a quick search on the web and I don't think you will have trouble finding a new reproduction for under $125 US. If you really want to find an authentic original I can put the word out in our local MV club to see if anyone has a good original.
Here is one site I found on the web
http://jeeppartsguy.com/products/?vi...product_id=348 I've never used them.
Cheers Phil