just trying to help...call SparoMobile in Downers Grove Illinois 630-963-8410 and tell them your make and model and the plug you are looking for and they will look it up and tell you the new replacement plug. I live about 5 miles from these cats and have used them for years....they know the skinny. I just did this last summer and they have this giant cross reference database and will tell you that, no that plug is no longer made, it's superceded by Bosch plug blah blah blah... and I say fine, how much...and they tell me...these guys know their stuff....and they have it!
It's awesome...give em a holler and at least you will be given good information I guarantee...tell em Cliff sent ya...