Are these stock spindles?

[jonmc56]

69 C10 CST, I'm planning disc brake conversion for the front, and possibly a drop. I'm not sure whether I have stock height spindles now, please see pic. I see a "GM 0970" stamped near the top (at least that's what I think the numbers are).


Please see pic of current ride height (sorry its small), currently running 255-60-15 tires. It seems like lower than stock ride height to me, but not sure whether it has drop spindles or different coils.


Thanks in advance!
Jon