Is there a special tool or something needed to remove the friction discs and plate?
Yes. You need a spring compressor. I just replaced my clutch and bought the tool from Dennis Kirk for like $40. I put the SE extra plate clutch in and it was a piece of cake. Just make sure you buy everything you need (gaskets, o rings, shifter seal, etc) before you start. Also, remember to soak the friction plates in fluid before you install. Good luck.
Check this out - it is a complete kit with tool. Hope it helps.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=360115259642&sspagename=STRK%3AMESELX%3AIT&viewitem=