Its the SACO kit, but the acn-one is probably the same. I bought mine from Alex from VW-ISP-West (or something like that name), who mostly do type 3 parts. The sell the updated, upgraded set throuh ebay as well IIRC. The new set has at least better tubing for the hydraulical line front to back.
Just do a search on SACO here on GL, as Shad Laws did the saco set as well with his 923 in his late type 3 fasty back then and had a few good things to say about it (figures huh
)