Just a shot in the dark here but try checking the transmission mount. I say this because I had very similar symptoms in my sisters jeep. It rattled in gear and during acceleration but not when cruising. Luckily it is pretty easy to take off and inspect... or just upgrade to the Z1 unit while you are at it.
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| Akuma | Motordyne | Z1 | NST | CNT | Stillen | Avant Garde | RJM | Performix | Tint | LED | GTR | Nissan |
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