I have a 2003 2500 auto. from what i've seen it came stock with about 250 hp.in 2004 they made it 300ish hp but did they upgrade the tranny at all from 2003.I think i have the 48re from what i've read so should i be able to boost the power to 350hp without worrying to much about killing the tranny. I'm new, please help me.