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I use it with a standalone dash mounted screen unit, a cheap little Chinese thing that just does that and CarPlay.
Ive had good success on similar hardware (5070 + more ram) with GLM-4.7-Flash, using llama.cpp's --cpu-moe flag - I can get up to 150k context with it at 20ish tok/sec. I've found it to be a lot better for agentic use than GPT-OSS as well, it seems to do a much more in depth reasoning effort, so while it spends more tokens it seems worth it for the end result.
I just run the llama-swap docker container with a config file mounted, set to listen for config changes so I don't have to restart it to add new models. I don't have a guide besides the README for llama-swap.