"I had my first sack of Krystals in Mississippi a year ago. New England doesn’t have anything like these guys.

No, but NY City does. It’s called White Castle and it is the creator of the slider, so you need look no further.

http://whitecastle.com/_pages/Find.asp?frm_metro=New+York%7C10018

"I was hoping that the midwest would. I can’t find any slider/belly bomber type burger places anywhere near Omaha. Can anyone help?"

Sorry, St Louis and Minneapolis are the closest cities with White Castles to Omaha. Use locator in link above to find their exact locations.