Dear, low resale not only means that it will go cheap when selling, it also means that it will not go easily. Do not change the engine, compatibility issues aside, it will lower resale even further and there are legal complications as well. Na sirf mechanics kay pheray lagain gay balkay ETO office kay bhi. Get yourself a early 90 model corolla, a clean one and you're good to go. Also, if a city is cheaper to maintain than go for it since its mileage is better than corolla. Both corolla and city have great resale.