This one is Newport Engineering, when I was researching there was one other company that had a far greater looking system and great factory looking switches but I forgot their name because they were significantly more expensive.
Here's how the switch ended up:
The company sells an adapter to mount their switch in the dash but I just altered the factory switch by cutting it up and adding a thin piece of steel to make it more stable.
I drilled out the slot where the old switch was and mounted in the new rotary knob, instead of sliding left and right it just turns clockwise.
From 12 o’clock to 4 is the delay adjustment range, then one click to 5 O'clock for slow, and another to 6 O'clock for fast.
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