I swapped a JDM into my car, when the stock motor spun a main bearing. The engine I bought was in very good shape, and very clean inside, no crappy colours. It's holding a hell of alot of power too, on stock internals. The only problem I have with the first gen motors, is the lower compression. You'll lose some bottom end power that way with the lower compression, but I'll be building a hybrid this winter, so I'll do with it for this summer.