The nicest option would be one of the vdo ones with an electronic sender, like the 300 disco.
No more jumpy needle either.
They're about £170 though. Maybe even more.
But, to answer your question, there's certainly a website somewhere with photos of all the drives and descriptions. I just can't remember where (so it doesn't actually answer your question at all!)
If you're thinking of swapping them, start applying penetrating oil now, and, in 3 months time, when you finally get around to the job, it may only take you 3 hours to get it out.
You are over reading by 14% based on the speeds you have given.
yellow will give a 10% decrease in indicated speed based on having a blue currently so 57mph GPS will be 58.5mph indicated
Red will give a 15% decrease in indicated speed based on having a blue currently so 57mph GPS will be 55.25mph indicated