was crawling around under my truck (95 auto. ) after i first bought it and found a skew (if that's what its called?, for scanning) label on it that has date ?-?-98, could this be a replacement transmission, the truck has 170K, but has firm crisp shifts. when get my new plate should i just run it, or upgrade the transmission immediately, i only want additional pulling power for my 30' Jayco, so i'm not looking to go too radical... . what plate would be best?