according to my amc parts books, for 01/40/60- not eagle 30 series: Calpers for 79/80 4 and 6 are the same.( L and r are differnet of course) 79 and 80 4 cylidner rotors are the same part number. $140 bucks in 1987 79 and 80 6 cyl rotors are the same part number. $120 in 1987.(different from 4 cyl. 79 4cyl pads are one number. 80 4cyl is another. 79 6 cyl, except amx is another part number, and it subs up to 80 pacer 60 series. 79 amx is another number, and subs up to the # for 80 6 cyl for 01/40/30. 80 pacer 60 is different than 80 01/40/30. My AIMPCO barke parts book basicall lists the 4 cyl pad as D90, the 6 cyl as D91 with a diffentialtion of some being semi metallic, versis organic, I guess. rotors are 5106 for 6 cyl 79-83, eagle 80-88 5108. rotors are 5112 for 4 cyl 78-81. rotors for 77- 78 6 cyl is 5103. javelin 71-74 and 74 ambo rotor with K-H is 5101. 74 ambo wiht bendix is 5102. what were the rotors that are sadi to be hard to get or expensive? let me know i want to check with my vendor. mabye this info might help, or confuse, who knows. regards, Ken, > The foru cylinder cars that I saw had vented rotors. > They were smaller diameter than the six cylinder rotors. > > Mark Price > > ============================================================= Posted by wixList Archiver -- http://www.amxfiles.com/wixlist