Jeb,
It comes with all of the Steel tubing so you just by a tubing bender ($9.95) and route it the way that you like. Most I've seen have a nozzle on either side of the firewall. One pointing in the footbox on each side and one at each corner of the firewall pointing at a 45 degree angle forward.
Part numbers on line are:
5 lb. : SSI-RC500P-DTS
10 lb : SSI-RC1000-DTS
