I am no longer going to have a use for these. I was going to use them on my frag system but decided to go a different route. They do not have the bottom mounts but the are sold seperate and pretty inexpensive. I have 3 that are in perfect working condition and 1 that seems to have seized up. Asking $175 shipped each for the working 3 and $100 shipped for the one that needs some work. I will also trade for vortech pumps.