Hi….Spark plug recommendation wanted for my 96 ST 1100. I’ve owned it for 6 years now and the plugs are due for replacement. The local Honda gave me a different plug than what I have and I’d prefer to use the NGK Iridium CR8EHIX but I can’t find that exact number online. They do have a CR8EHIX-9. Is that simply a higher temp plug? Any help appreciated.