I can account for the following:
400SM #1562 (fully upgraded)
400SM #1334 (fully upgraded)
M400S #1463 (fully updated)
M400S #600 (currently under restoration)
M400S #430 (fully upgraded)
M400S #1225 (fully upgraded)
M400S #740 (fully upgraded)
M400S #1072 (fully upgraded)
The 1st 4 are in my basement. Two others were mine and were sold recently. The others I maintain for other owners.
Frank