My SD with 240+ on it runs like a top. Others I've seen with similar mileage run just as well. There is almost no reason to spend 4k for a reman engine that needs installation when there are plenty of cars sitting around with great engines waiting to be swapped over. Find a running used engine & spend the savings on repairing the rest of the car.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.