^ both of my housemates (both with S13s) have used ebay hubs at one point or another, and they all went bad.
one hub (a front hub) developed play between the outer race of the bearing and the hub into which it was pressed! very very very very very bad. the bearing is bolted to the knuckle... but suddenly the hub/rotor/wheel are no longer firmly attached to the bearing! the only thing holding on the hub/rotor/wheel is the brake caliper (which is then getting loaded/twisted as the car enters a hard corner).
bottom line: ebay hubs can be very dangerous. either use oem s13/s14 hubs, or grind out a new snap-ring groove into a j30 hub and press in the correct s13/s14 bearing.
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