Using a Floor Jack as a Transmission Jack?

All I ever used was a Sears 1 1/2 ton floor jack with a piece of plywood big enough for the pan to sit on laying on the jack pad. I'd set the 904 or 727 on that....roll it under the car and jack her up and in! Never dropped one. After I got a lift, I had to relearn how to work all over again! :BangHead: I bought a nice telescoping transmission jack from Northern Tool, and it works great....but I kinda feel like I'm cheating on my tried and true ol green Craftsman floor jack! LOL :realcrazy: