The stock valve & barb is 2 1/4” long. The 3-piece valve & barb runs almost 4 1/4”.
I have less than an inch of clearance from the ground to the end of the barb on the 3-piece, but will be having the bucket sitting up on a shelf in my fermentation fridge, so not a concern for me.
You would definitely need to have the mini sitting up on something. I'd also be concerned about the space available for the valve in opening on the rubber stand that the mini sits on - doesn't look wide enough to me.
Thanks for the reply!
The bucket should be here tomorrow so I will look at the dimensions however I think you are correct regarding the opening in the base. Looks like the valve handle would be an issue.