this is for a shorty rubber one about a foot tall nice look

http://cgi.ebay.com/ebaymotors/aw-cgi/ebayISAPI.dll?ViewItem&item=601903644&r=0&t=0

this is for a brand new mechanical one

http://cgi.ebay.com/ebaymotors/aw-cgi/ebayISAPI.dll?ViewItem&item=601909282&r=0&t=0

Or... you could try and find one at a junker those places are great.

Dan