Do you mean a 1985 SR or do you mean a 1986 SLI? the SR has the XNA2/XN1 carby engine. The SLI has the XN6 mechanically injected engine with a piggy backed electronic lambda feedback. The SLI was introduced when unleaded fuel waas introduced in January 1986, although some SLI's may have a 1985 build date.Smithy:
or a 1985 SRI. .