Zoops does make kits for long water pumps as well. I have the v-belt short pump kit and it went on great and adjusts very easily. I got it because I want to add AC later and I already had the short pump. I also checked into buying a March kit once but Mr. March himself sent me an e-mail saying that his company does not make v-belt kits. I found that funny and sent a response with part numbers for some v-belt kits of theirs in Jegs. He never responded back so he didn't need my money.
68 RS, Ash Gold,pwr brakes,pwr windows,Hounds tooth,355/T350,MSD 6AL,3200 stall Dynamic converter,3.31:1 posi,Autometer guage pod