This August I replaced my 2003 Jeep Grand Cherokee with the new 2014 Jeep Cherokee. Despite similar outside dimensions, almost exactly the same width and length, the new Cherokee has much less cargo space than my old JGC. About 54 cubic feet to 72 cubic feet. However it does work for me even though my old crate is too tall to go in and I need to buy a new one. I put the back seats flat in both and the load floor in the new Cherokee is higher but Oban is only 72 pounds and I can boost him in and lift him out. I tried a ramp, it was too fiddly, but with the weight of your dogs I'd definitely need a ramp.