Will a boot for 1993 lebaron convertible fit 1989 lebaron?

No, a boot (trunk lid) from a 1993 Chrysler LeBaron convertible will almost certainly not fit a 1989 Chrysler LeBaron. While they're both LeBarons, the 1989 and 1993 models are from different generations with significantly different body styles. The convertible tops and associated trunk structures would be quite different.