The picture says 83-85 but then reading more information on the website it says 83-86. Which is it? Also, I have an 86 mustang 5.0, standard transmission, convertible, everything as original as we could keep it. I purchased what I thought was a new fuel sending unit from national parts depot. Turns out it doesn't work well at all. it said it was for a1986 mustang 5.0, but now the fuel gage reads 1/4 tank as being full and way past the "E" as maybe having a 1/4 tank of fuel left. Bottom line is, it doesn't work. I am sure the fuel gage is NOT bad, so how do I know THIS fuel sending unit is the right one??? Rebecca F.