Maybe the SR is lighter, maybe it isn’t…and I might be out in left - but something to consider if your car was on a lift or even without a motor for a while: your springs may have temporarily “stretched” a little causing a slightly higher stance before “re-settling”. Just throwing the idea out there, I could be way off… :lol:
Until someone with some expertise weighs both motors under the exact same conditions & on the same scale, we may be left approximating.