Help Please waterpump pulley fitment

so i need a double groove water pump pulley for my 440. does small block and big block both use the same pulley. will this fit you guys think

http://cgi.ebay.com/ebaymotors/MOPAR-2-BELT-WATER-PUMP-PULLEY-4_W0QQcmdZViewItemQQhashZitem53e00dac34QQitemZ3602 41278004QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccess ories

Go here and look up pulleys or call them. www.BPEMopar.com