Hey Dog, if you are worried about installing a s/c on your engine after 52k, what are your expectations of overall mileage on a 1GR? It sounds like you're only expecting 100K from this engine :dontknow: ?
I dunno what the life expectancy is for our motors, but I would expect at least 200k on a conservatively driven well maintained engine?
I had 100k miles on my old '91 Toyota 4x2 22re when I sold it lasy year, and the motor was still like new. No smoke, no oil consumption, but then this is a totally different beast.
Personally I wouldn't have a second thought putting the TRD s/c on my motor with "only" 52K on the clock.