What number champion plug do you use in this motor, the tech manual says rn12yc-the champion website calls for the rn14yc, I put the 14's in my amx now its not running as good, I pulled autolites out and didn't take the number off them- I think they were 65's, and their website calls for 66's wHAT GIVES? Life seemed so ez Jeff Tampa Bay 1969 390 AMX _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.wps.com/mailman/listinfo/amc-list or go to http://www.amc-list.com