ASR, and houser make standard travel I believe. I ran into the same problem so I made my own. Canniboomer on this site also has a really nice set of +2 a arms that he sells for a really good price.
I think you could use a set off of a 400ex or was it a 250r? either way worse case there is another option. all I think you need to get is ball joint sleeve adapters.
I have a full blown +2 Standard travel Houser setup off a dale I recently bought that I would be interested in selling.. It is for a 400ex, but will work with a dale.
It is complete with 400ex spindles, hubs, and calipers and will bolt right up. I will let it go cheap if you are interested.
I built mine with 400ex geometry. Just a couple nylon bushings on each side and they fit great. Talk to canniboomer I believe his set up is about 1 1/2 inches per side actually and those would be good for xc. 400 ex arms fit pretty easy as long as they are +1 forward aswell.