You can use the 4-pots from either the 97-2000 GSXR600's or the 4-pots from the 97-01 TL1000S's. They are both direct bolts ons. I just recently sold my 4 pots with the master cylinder, resevoir, rubber lines, and good condition stock pads for about $70. Check Ebay or Gary Foremans TL EZBoard ( http://pub141.ezboard.com/btlownersboard ). There are alway people looking to get rid of their 4 pots so they can get 6-pots.