John,
The SV ran at least two ex-UTLX tankcars, #100 and 101. The only real difference between the two is the the #101 had the middle section painted black, while the #100 was completely silver. The #100 still exists today, I have no idea what ever happened to the #101. The SV had side door caboose #2 early on, but not much is known about any of the others. There is a photo of the #2 on the SumpterValleyRails chat page, in the files section. If I can find the tankcar photos I'll send them to you.
Thanks Again, Taylor