Be very careful of getting a cheap one, a friend of mine had one collapse with a brand new duramax on it. It was the first time that it was used, and it was installed properly. It was just very poor quality steel that failed. Luckily he wasn't under it at the time. I agree with getting a 10k lift if you plan on lifting diesels. I'd stick with a brand name also, so you can get spare parts. A switch went out on mine and couldn't find a direct replacement for it.
Info on a lift site.
The 9,000 LB 2 post lifts are not designed to be used to pick up full size or larger, extended cab or quad cab trucks or sport utility vehicles. This is not due to the lifting capacity; it is due to the location of the pick up points. The fuel tanks on these trucks are situated so that the adapters are unable to grab the vehicle correctly, causing the arm to be placed too far forward. The vehicle is then unbalanced causing the arm to kick out, which could then cause a lift failure and/or a possible safety hazard. Many of our customers have used these lifts without incident; however these are placed in businesses with experienced, qualified technicians. Again, it is the placement of the arms on these vehicles that creates the issue, not the capacity of the lift.
