i just bought a 2001 hd 2500 2wd .theres no documentation on the truck abouut what it has in it.just wondering if you guys could help me fill in the blanks.i know its a 6,0 but are they lq4 or lq9 ,cause im alittle weary to say this, but it moves ,even compared to mine.im assuming 4l80 transmission.and 410s dont know yet if posi.funny tho when i went to look at it i thought it was 4wd cause it sits just as high as one .whats the norm here on these guys.like i said ,im impressed with how fast it is.it feels faster than the escy i have also.im giving it to my son for his senior year in school ,probly no modding but i am curious.thanks