Took this out of the car a few years back and it only has around 3000 miles on it. I'd like to sell it, but don't know exactly what brand it is. There are a bunch of 6's stamped around the casing, BO75 written on it in sharpie, and what looks like TP492 engraved on the casing. It's a 2800 stall and was purchased around 2004. Any ideas on what it is?