Keep the 2 barrel. You won't like the 4 for Economy. Tune it up and let the engine work. Get A 700 r4 tranny. Has overdrive and more efficient. Easy to wire in. Has different first gear options get nice and low (numerically higher gear ratio) to get that beast moving. A diesel torque converter will get the tranny working at lower rpm and make it even more efficient
292 or 392 engine? Small block or big? 4x4 then get some manual locking hubs. Gonna work it hard? If so keep stock size tires if not get some taller skinny commercial tires. Blow them up nice and hard to 80 psi
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