GPS Speedo Option?

[cebra]

I am now looking for a 3 3/8" or 5" GPS speedo that is decently priced, any suggestions? I have a lot of speed traps on my daily commute and have gotten 2 tickets in the last 3 months without a functional speedo. I may go with a scangauge if these don't work but wanted something slightly more stock looking. I did the S10 speedo swap and it reads 120mpg at 40mph on my 2000 LS engine and I have been unable to get it fixed in the tune. I am afraid cable-x would do the same since it is feeding of the same VSS signal so that is why I am leaning toward GPS.