I have: two 80s 258s with plastic rocker covers a '74 258 with a metal cover a '67 232 with a metal cover. Why can't you put metal covers on heads that had the plastic ones? -and- My two 80s 258s have different plastic covers, the bolts are different heights. What's the deal? _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com