there's tons of reasons why these cars end up in junkyards with low mileage in japan. my front clip i just aquired was a 1998 model, not too horribly old, with about 50k miles on it according to the odometer. you could see where it was hit in the side because the driver's floor was buckled inward about a foot (definitely not shipping damage

). people go out and kill cars, and the 180sx and silvia are popular low-dollar sports cars in japan. they get wrecked or the owner just gets a new car and doesn't want to pay taxes on their 40k+km car so they junk it. hell, used S13's go for practically nothing over there.
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SR motor set/clip $2500+, FMIC kit $700+, Downpipe $100+, 3" exhaust $500+, Misc install parts $100+, Shop labor for install $1000+ and you still only make 220rwhp for $5000
so what's so CHEAP about the SR swap again?