Knuckle baskets for N&W/NS SD40-2s

[tarnett]

All,

  I noticed that Plano now has six different variations of knuck baskets available.  My question is which one is proper for N&W/NS SD40-2s?  Here's what's available per Plano wbsite:

#11893 Coupler Knuckle Baskets w/lids (2) - 20" X 20" X 14" - round hole sides 
  #11894 Coupler Knuckle Baskets w/lids (2) - 20" X 20" X 14" - round hole(1) and mesh(1) sides
  #11895 Coupler Knuckle Baskets - open (2) - 24" X 14" X 14" - diamond mesh
  #11896 Coupler Knuckle Baskets - open (2) - 24" X 18" X 14" - diamond mesh 
  #11897 Coupler Knuckle Baskets - open (2) - 24" X 24" X 14" - diamond mesh 
  #11898 Coupler Knuckle Baskets - open (2) - 24" X 24" X 10" - diamond mesh 

   Thanks in advance.

Regards,

Todd Arnett