I feel like a broken record everytime I suggest it. Get this head, works awesome until the seal gets worn but it takes 5 years or so. Make sure to oil the shaft of the pump too. Comes with an extra long hose. I have this on a Silca and a Blackburn. I love the Blackburn the most. Unless it has a plastic shaft I'd keep it.
https://www.amazon.com/Sunlite-Twinh...1213328&sr=8-5