I have a similar setup. I did replace a 2,000 a couple years ago with a Xantrex when the 2,000 went out. I was told you could not buy the 2,000s any more. The inverters are down in an area off the second bay. Why don't you just put the new ones where the old ones used to be? My controlers are in the area of the control panel up in the front. Again the new ones should just bolt where the old ones were.
2013 Jeep Wrangler Unlimited