Boxcar Identification for Build

I was wondering if I could get some help identifying these boxcars so I can look up some specs for a possible kitbash. No one seems to have one of these in N scale, but they are quite common in paper service to the St. Pete Times!

All I know is that this one is a 52’6" 5307 cu. ft. Double Door Boxcar, and I can’t seem to find the builder!

I know next to nothing about these next ones, other than it is NOT excess height, but appears to be 60’ in length.

Any information on these cars is much appreciated!

-Christian

Christian,

This site shows N-scale 50ft rib side plug door boxcars and who has them. I don’t believe it says who made the prototype though:

http://www.thefind.com/search?query=N-scale+50ft+rib+side+Plug+Boxcar

Frank

ATW 3603 appears to have been built by either FMC or Pacific Car & Foundry.
Mechanical Designation XP
AAR Car Type Code A406
Inside Length 52 ft 06 in
Inside Height 10 ft 07 in
Inside Width 09 ft 06 in
Side Door Height &