I believe that IRO wheels use formula hubs. They will work with standard road spacing. You probably do not need a whole build kit, if your bike is complete. Strip everything off, you will need a new BB with a shorter spindle, a chainring,, chain, at least a rear wheel, and cog.

your pedals, cranks, headset, seatpost, saddle, brakes tires, tubes, handlebars and stem are all reusesable