I think that the four banger has a different bolt pattern to mount to the bell housing than the 3.0 liter. The 2.9 V-6 and other earlier models of rangers won't match up. The 3.0 is a one of a kind that is different from othe Ford v-6's and to change your engine to 3.0 would mean that the transmission and everything else from the engine back would have to be changed too.
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