Gear Ratio and RPM deciding on gears

well, if you going to be 55 mph or under, then go 4.11's. I don't know what you call a dog because some think a 1.8 60 ft time is a dog and others think a 1.8 is a race machine, but if it's a lazy pig that won't cross the street with 2.71's, then you probably have another issue.