did my T hose, well I started it , but a mechanic shop finished it ,what a PITA to do . at 107k and they were fine , I had the part seating for a while so we did it any ways
I turbo charged my Honda long time ago , and it had 150k miles on it . I was running a 15psi of boost and by the 2nd month it puked its connecting rods and valves out . I took it to a shop to rebuild the engine and they told me with any engine that’s has 120-130k miles on it owner should rebuild...
65 mph is good speed for 100 imho, anything more you just wasting your gas , plus not sure but there is a vibrating feel in 100 when you pass 70mph. if you are cool with that then you're good