I had an F/P gauge, and an A/F gauge made by them in my 94. I have two A/F gauge in my 02. I feel they are a good value, I purchased mine through summit racing, for around 35-45 a piece. I did notice that my two A/F gauge look a little different, like they were made by two different manufactures. They tell me what I need to know, and would buy them again.