Okay so i have ran gassers my whole life but work on diesel tractors, im selling my 2010 gmc sierra and found a 05 dmax woth the lb7 and alli trans in it. This truck has 313k on the chassy and they guy rebuilt the trans and engine woth his dad and has pictures showing it. The engine and trans has 10k on them and they repainted the truck themselves. It is stock rebuild with studded head gaskets, 63mm turbo from pro performace and Efi live. He is asking $20k for this truck just was wondering if it is a good deal for it. He bought the truck for 6k with a blown engine and as i said they rebuilt the truck.