I changed my radiator and thermostat today. Before I changed it on the highway the temp guage would drop down to a little above cold. And then when I on the regular streets and i'm at a stop light it would be little below the half. Now i drove it around and it stayed a little below half even on the highway. Is correct or is something wrong..

Also the radiator that was sent to me from radiatorexpress.com as the two pipes at the bottom for ATF lines, but my car is stick does this make a difference.