Snap off Steering Wheels

I want to get a new snap off steering wheel fitted in the new year and quite like the look of this one…

http://www.demon-tweeks.co.uk/motorsport/steering-wheels/sparco-310-steering-wheel-black-suede-310x260mm

I noticed it doesn’t have the hole for the horn but does have two other buttons.

Does this matter?

Also what boss kit should I order with it?

I have that wheel, the two buttons are for the horn or rocket launchers…
This is the hub I use from Works Bell. http://passwordjdm.com/Works-Bell-C332.aspx

Oil squirters!

It’s relatively easy to get the horn to work off either or even both buttons. I have a Sparco wheel and use the fitting kit from Eliseparts that has the two brass studs/connectors that take the circuit from the wheel to the horn.