The only problem I've had with this beast is the gas mileage, otherwise I put a tune-up kit in her.
It handles like an ocean liner, rides rough, but I haven't walked yet.
I use it more as a tractor than a highway rig. I bought it from a farmer just outside of town, that's how he used it too. It's a work-aholic, gas guzzling, tire wearing, loud and ugly.
My future plans are to do a complete restoration, back to factory. (with a few extras of course)
It came from the factory with a 396, 400 Turbo Hydro-matic transmission, a real screamer in its day, from what my old man told me.
It is my understanding that there weren't a lot of these built. Try buying engine mounts they will tell you that they didn't build a half ton two wheel truck with a big block. It was a special order truck! GM still carries the engine mounts. I also own 1969 CST-10 396 w/turbo 400 12bolt posi rear with P/S, P/B, A/C. If you know more about these trucks I'm interested in hearing more.