<HTML>Hi avery, yes that is the part number, if you want I can send you a pic of them side b= y side so you can see the differences, basically the new one, is 1/4 inch shortter, the hammer rail is cut off in a= 90 degree angle, but the old one has 110 angle, the major problem is the screw holes for the wippen rail and the let off rai= l has a different cut , with make the rail impossible to mount. the choice of modifying the brackets it really tough, so I took today one of= the old ones to a casting iron facility and see if they can come with a aff= ordable solution. thanks for the help Eduardo</HTML>