Ram rail mount on a sabre

[Ryan2005]

Just recently purchased a hds 9 which I plan to install on my sherm mount in the dash. I am looking at moving my hds 7 to the hand rail. Does anyone know which ram mount (size ball and length) that I need? Also noticed some have used a rubber block for extra support. Where can I find these? Thanks

[jcdogfish]

I had a HDS 7 mounted on the rail with a clamp mount and it worked great. I don't remember which mounts I used but I got one long enough to tuck the unit in where it almost covered the speedo which I didn't use. Wish I had rails on the P2, I liked to run 2 units.