" From: farna@xxxxxxx " " All 1973 Series 01/40/70 (Hornet/Gremlin/Javelin) used 7/8" rear wheel cylinders with the K-H discs & V-8. IIRC the other disc types used the same. Big cars used 15/16" rear wheel cylinders. You should be fine with 13/16" or 7/8". Any Bendix wheel cylinder will fit, doesn't need to be AMC specific. 73 six cylinder Gremlins used 13/16" rear wheel cylinders, drums or discs. in '68 v8s used 1 1/8" rear cylinders, which is what i had [wrongly] on my 199. the proper ones, which i have now, are 15/16". ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought