Valve Body Performa w/o parts = PN 1035606 or 1035807 and now 1244651 for the Autotrol Performa 263 or 268
Current Valve body = 1244651 and is the empty Valve Body with Logix 700 series top plate ( if replacing 400 series you'll need to swap out your old top plate ) and does
include the new Flapper Valve Disc set installed,
plus distributor o-ring, tank o-ring, and locking ring,
but no other internal parts.
Note: Again this is the 700 Series ( Logix ) Top Plate, but you should be able to remove and re-use your old Top Plate if you have a 400 Series ( 440, 460, 460TC ) timer.
Previous PN was 1035606 = 400 top plate, and now with the 700 top plate, PN = 1035807
This video touches on some of what you'd need to do when moving the Control Board and Motor from existing valve body to the replacement valve body,https://youtu.be/JvLGyw4Qqr8