For the last decade or better we have been using Certified transmission for our GO TO remanufactured transmission supplier. They do a great job a getting us timely estimates and availability. If we need the units that we estimate they have them to us in a very timely manor. It is nice to work with a company that you know has been around and will be around for support in the future. The pricing is very competitive and fair. On the rare occasion that a problem does occur they do a outstanding job of standing behind the product and I have not ever experienced a situation that we could not work through. I highly recommend Certified Transmission products and services to any of my customers and peers.