Hi Ron
The 560270028 dist came out in 1994 (OBD1) and was used until 1999 (OBD2) so it is compatable for at least the 91-99 model yrs ,I know this because my 94 had the 53006150 91-93 dist in it and now has the 56027028 .

OBD2 may pickup on a older dist put in it 91-93 beacuse it has the right plug in but I don't know for sure.

The 89-90 model yrs had the 53007190 dist in it and may have been used earlier , if it is different inside ie: the pickup than the 91-93 then it probably wouldn't swap.