We(windydevil.com) sell these bars and through trial and error of course came up with what we think is the best solution and its very simple. We use 60cm Ocean Rodeo bars to start. has a 22m+ 3m extension lineset.
We add a Ozone Cleat CL-826-11AN which includes the boddy kit to feed rope through. The cleat is available but the boddy kit doesn't seem to be available so we source these from England somewhere. Ozone US might have some not sure.
We use Ronstan pully's to create the 4:1
We then add 11 feet of double braided 1/4" line which we eye splice to one of the pully's.
That's basically it. very time consuming but makes for a very nice very clean race bar with a smooth de-power.
cleat kit is about $28http://www.clamcleat.com/cleats/cleat_d ... theid2=180
Ronstan pully about $15 each
rope is about $1.50 pf
complete built bar we sell for $350.