Hey, i'm new here. I just wanted to share a little something, I thought ya'll should know. I was having some trouble with some of my gauges in my el camino. So I decided to finally give it some good work. I went all over the place to find some good 3 3/8 speedometer. I was going more towards analog but then I found a gauge that you were able to program for different tire sizes. It was digital of course, so I was skeptical of it. So I tried it out, and I haven't had any problems with it. It's called the Digital Performance Speedometer. I actually received some really good compliments about it when i showed my stuff off at a show. Well, just thought i'd share that with you people. I believe the company that builds these things are Nordskog. Reasonable price. And pretty easy to install from what the mechanic says.