Product review (1 stars): change out the three bolt
I bought this hoping to do a change without changing my pipes, the adapter lowered the unit so I had to redo the pipes anyway, I ended up just taking out the three bolt and putting in the EZ mount since I had to go to the hardware store for PVC, I say save the money and do the EZ mount, my sink is 30 years old and I had no problem once I got started, The Waste King disposal is great and well worth the trouble of the change out. Also I waited an extra week for this part, wish I hadn't ordered it or gone that week without my disposal.