yours should be a fixed pulley type i think. you just need to make 100% incase its had an engine swap at any point.
just have a look at the waterpump, if it looks like there are 4 bolts holding the puley to to pump then its a removeable pulley type, if you cant see any bolts then its a fixed pulley type.
speak to any of the traders like Dave etc. ebay also do them but some are so cheap i dont know whether they would even be any good