Bicycle Mechanics - Soma Double Cross Housing stops

My Soma Double Cross frame comes with downtube shifter pods sticking out of the frame. However there are no housing stops there, so I can't figure out how to run shifting cables on the frame.
Is there some addon I have to buy to convert the downtube shifter thingies into housing guides/stops? I haven't found anything online yet.

Update:
http://www.ebikestop.com/Items/004-fs9802 <-- Will these work? How do they attach to the downtube stops?

Also, any soma double cross owners here? Does the frame come with the housing stops? Perhaps the fellas who did my S&S coupler installation took those off and accidentally forgot to put them back?

Those are similar to what you need although you can get Shimano stops that are nicer and cheaper (they have aluminum bodies). I forget where I found them but it really doesn't matter for you for the following reason. All Shimano, and presumably Campagnolo, STI kits come with shifter stops that bolt on to the frame. The mount for the STI stop is the same as the mount for a downtube shifter allowing you either option. The stops attach with a short socket head screw. Some frames, like my Specialized, do have STI stops built in but I prefer having the just the mounting points as it allows more options.

Almost any shop that handles Shimano or Campy will have that part. Although I ride nothing but Campy parts I use the Shimano cable stops because they look better than the campy equivalent. Both work...
Unless you bought the bike assembled normally the bikes don't come with the cable stops unless the bike has braze on fittings. You usually still need the screw in adjustors.

My frame did not come with them or the cable guide beneath the bottom bracket. These are what I used to build up my Double Cross:

http://www.excelsports.com/new.asp?page=8&description=Cablestops+for+STI&vendorCode=SHIM&major=6&minor=8

BTW, the bottom bracket shell on my frame also needed to be chased and faced. This took a while as the LBS owner had to borrow the tool from a local frame builder.

These look a lot better than the plastic Campy pieces:

http://www.biketoolsetc.com/index.cgi?id=589849673703&d=single&c=Repair-Parts&sc=Frame-Parts&tc=Down-Tube-Cable-Stops&item_id=SH-67B9100

My frame did not come with them or the cable guide beneath the bottom bracket. These are what I used to build up my Double Cross:

http://www.excelsports.com/new.asp?page=8&description=Cablestops+for+STI&vendorCode=SHIM&major=6&minor=8

BTW, the bottom bracket shell on my frame also needed to be chased and faced. This took a while as the LBS owner had to borrow the tool from a local frame builder.

I've been wondering about how to tell that a bb shell needs to be faced. My Tiagra compact crank installed OK, but it seems to spin less freely than optimal.

I used the same Shimano adjusters and had my BB shell chased, but didn't really seem to need it. Also, external bearing BBs don't seem to spin as freely as cartridge under no-load, so I wouldn't worry much about that, either.

Ob picture of my SOMA double cross:
http://www.haphazard.com/bikes/soma_med.jpg