Hello! I have a 2003 Infiniti G35, it has just recently hit 100,000 miles, and I am just wondering if there are any good engine mods, fuel system mods, bushings, engine mounts, or things of that sort that would need to be replaced, just could be replaced to help with the reliability of the engine? thanks!

 

You could probably check YouTube, but here is my short list usually not covered:
* a proper oil pressure gauge. The gallery gaskets give out with time, so seeing a drop in oil pressure ahead of time could keep you from jumping timing
* diff bushings
* suspension bushings