Hello i am new here, but have been reading here for awhile. this forum has the best info out there. money cant buy info. this good! i just recently purchased a 2003 hd2500 dmax w/ the lb7 motor. a couple off days later i crawled under it and noticed some big holes in the transmisson tunnel. i think it has been converted from a manual to a allison auto??? you cant see these holes from in the cab because they put new carpet in the front to cover them. could someone please do a vin# check to provide me w/ a build sheet and any info they can. VIN# 1GCHK23143F168478