Our booking engine at tickets.railforums.co.uk (powered by TrainSplit) helps support the running of the forum with every ticket purchase! Find out more and ask any questions/give us feedback in this thread!
As you seem to be another US diesel nut like me, I thought I'd say 'Hi'
I notice that you mentioned you were planning to visit Tehachapi - I've been there a couple of times, so if you need any pointers etc. just let me know and I'll try and help.