Matching engines with a 3speed
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If you have a 3 speed, you more than likely have a A904 trans. This same trans was offered with the 318, but not the 360. Its a light duty transmission, and i doubt it would hold up behind a 360. Im pretty sure no matter which engine you choose, you would need a bellhousing for a v8, the one on your v6 has a different bolt pattern.