Perhaps a Plug for other Pulgs. but I my experience other companies make better Plugs than Bosch.
NGK makes excelent Plugs there part numbers are as follows
Description Part Number Cost Each Comments
IX Iridium BPR6EIX $6.95 Best Plug for the money by far
Single Platinum BPR6EGP $2.68 Good value and Performance
Denso Makes Very High performance Iridium plugs that work maginialy better than NGK's but don't last as long and cost almost twice as much. they are very good though.
Description Part Number Cost Each Comments
Iridium Plug IW20 $11.95 Best Performance
Double Platinum P20R8 $4.74
http://www.sparkplugs.com/results_app.asp?productTypeID=1&AAIA=1104950
I will add more later I need sleep