This is the only place Iv'e found..
http://www.jcwhitney.com/product.jht...D=5199&BQ=jcw2
the only thing is there 2-1/4 size so they kinda restric if your running 2.5 or 3.0 inch pipe... $22.95 a peice though, lever with cable to the cockpit!
http://www.jcwhitney.com