" From: Greg Taylor <amundaza@xxxxxxxxx> " " I would recommend getting the later 1980's 258 cylinder head, intake and exhaust manifold. Those 258's had 9.2:1 compression. except '87-up have the same problem as the 4.0 head swap - wide block, slightly different water passages. makes swapping a 4.0 head to an '87-up 4.2 easy, but swapping either to an earlier six a little less straight. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list