Or maybe he blew his engine and got a JDM B18C from a type R as a replacement and everything else is still the same. I wouldn't rely too much on a gear ratio calculator to tell you whether you have a 4.4 or 4.7 final drive. Unless you have someone with a DC2R with known 4.4 final drive telling you that your engine should be spinning at xxxx RPM at a certain speed, I would still be guessing that your gearbox could have a 4.7 final drive.
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