A/C Clutch pulley bad, Underdrive pulleys now?

My AC clutch pulley needs to be replaced bad. It squeals during the first 5 mins of running and 3 mechanics have all agreed it just the pulley and not the compressor (thank goodness). Anyway, if I order the Steeda underdrive pullies, do I get an AC pulley, hence I correct a problem and gain some ponies??

Thanks!