Thank you Paul! Since I have an older model engine also (1996?) I may run into the same issue with the mounting bracket. Definitely a better price than replacing the parts from Rotax. I think it is the harness on my engine, but it has been a constant fight to keep things working and I need to either replace it or buy the SDS.

I did notice on the SDS site that it looks lo only cover one set (4) plugs, I understand you have replaced both sets? The total cost was only $1200 total for the complete system for both sets of plugs? I need to seriously look into it some more.