Steve,
I found that the stock extention was a little to long. It made the sending unit hit the headers.
I used a steel Weatherhead fitting #c3359x4 which is a 1/4"MNPT x FNPT 45 deg street elbow. I ended up adding a small extension to this fitting so it placed the sending unit in a location that I could get to it if I needed. The extension part is Weatherhead #c3209x4x4. Both these fittings are plated steel that I got at an industrial hose supply house. But if you would like I can send you my old stock extension.
I found that the stock extention was a little to long. It made the sending unit hit the headers.
I used a steel Weatherhead fitting #c3359x4 which is a 1/4"MNPT x FNPT 45 deg street elbow. I ended up adding a small extension to this fitting so it placed the sending unit in a location that I could get to it if I needed. The extension part is Weatherhead #c3209x4x4. Both these fittings are plated steel that I got at an industrial hose supply house. But if you would like I can send you my old stock extension.