Junk Yard or Salvage Yard that has Caterpillar diesel engines in large quantities in America.

I am looking for a freelancer to help me find a junk yard or salvage yard in the Midwest that has a large quantity of Caterpillar diesel engines.

Preferred Location:
- Midwest, Chicago.
- If there is a popular junk/salvage yard that is located in anywhere in the US that would be great also.

Model and Condition Preference:
- Specific model but no condition preference
- I am looking for large quantities of used or broken diesel engines
around 14 to 16 engines
caterpillar
for mostly industrial engines
3406Cat
3408 cat
3412Cat
C11
C13
C15
C18
C32

Intended Use:
- Resale

Ideal Skills and Experience:
- Experience in the salvage yard industry
- Knowledge of Caterpillar diesel engines and their models
- Strong research and networking skills to locate the desired junk yard
- Ability to negotiate and secure a good deal for the engines