If its taken care of then Its no big deal. ESPECALLY FOR A DIESEL!!! The burban has 145k on it. Some rust on the under carrage but body is spotless. Was hased, but a good coat of was, electric buffer. Some paint restorer, and it looks brand new. Also the diesel and 2500s have the 4l80e tranny, so it lasts much longer as well, my tranny was rebuilt (about 25k miles ago) and it shifts better than the 07 with 8k miles on it. IM thinking about spending the coin and throwing a Gm crate 454 in there or i man just rebuilt the current 454. But im not sure, need to get in there and see the condition of the cylinder walls, pistons, cylinders, and the block it self. It they look good i will just rebuilt it and push the power from stock 300 to about 355 or even super charge the mo fo, Then get a BB tune and push that power even further. :thumbsup: