Originally Posted by MaysEffect

Both shocks for the Nismo and base have the same design and internals. The springs and bumpstops are what differentiates the two.

Not sure changing your Koni's with that amount of mileage is necessary, but since you are taking them off/took them off your previous car, if you could get Koni to exchange them for free, sounds like a good deal. Putting them on the new car sounds like a logical upgrade.