I've got a Woods BH9000 on the back of my L3130. It is pretty big but the tractor is rated for it. You need a LA723
FEL to fit the Woods subframe to properly mount the backhoe safely to your tractor (necessary for whatever size backhoe you buy). I bought my backhoe used. If I was looking to buy a new backhoe I would look into the BH90X. Bigger is better in this case.