Volkwagen Beetle horn.

Howdy, I usually hang out in the Plymouth Voyager section and I figured I'd hop over here to ask a question that I hope is not misinterpreted as trolling.

I would like to swap the 95 Voyager's factory horn for one that sounds like a Beetle's since I love the sound of their horn. I know I need the 12 Volt version and the swap looks relatively simple (famous last words), but is the low tone or high tone preferred?
http://www.youtube.com/watch?v=jw2QBZ-jQP4
This is the horn sound I am looking for and I have located two websites for parts.
http://www.airheadparts.com/
http://www.mtmfg.com/category/view/58