The Explorer 8.8 is just too narrow for an MJ. Even the stock axle width was on the narrow side. Aside from that, it’s a c clip axle, has an excessively large housing and pumpkin shape that tends to shovel into obstacles, relatively small brakes and adds considerable unsprung weight. For 30” or 31” tires you can stick with the D35. You’ll have equivalent pumpkin clearance to an 8.8 on at least true 33’s.