Sorry for the delay as I was putprocessing with the Marines.
Yes, I have to get some of them made as I am out of 3's right now. Cost for a 3 pole is now $75 plus shipping of $8.95. Let me know. I take paypal at
airstreamnut@gmail.com or check can be mailed as well. Let me know. It'll take about 2 weeks for delivery once payment is made. Yes, they will mount to the eletric jack, but you'll need the u-bolts and an offset (many people use coil spring rubbers to make the mount off the jack post).
Thanks,
Rob