As Sal mentioned, the new MFT/3 is several inches higher than the MFT1080 (or the MFT800, which is what I had). I bought an MFT/3 to update my shop and often just stacked scraps on the 800 for those times I needed larger support. I was getting tired of that and was thinking of selling the 800 and putting the money towards another MFT/3. Instead, I built a rolling sysport to the right height and mounted the 800 (with legs removed) to the top. Works great.
[attachthumb=#]
Still a work in progress (waiting for shelf pins and more drawer slides), but does most of what I need already. I especially like the area under the MFT top for storing the clamps, dogs and other misc. stuff. Much cheaper than buying a new MFT/3, considering I probably wouldn't have gotten much for the old 800.