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4020 mods?
are there any mods or ways to get performance out of a '64 or '65 JD 4020? Like putting a large turbo on? fuel pump tuning?
or is by doing that something you have to design and custom make?
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'04.5 Chevy 2500, 4x4, RCLB, LLY
'97 Dodge 3500 SRW, 4x4, 12v SOLD
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