advice on pulling 383 out of a body

I have a question about a steel sleave i found on my garage floor as i was rolling the engine out from the car. It is aprox 2" long and 3/8" inside dia. I dont know if it is from the body or k frame etc. Or maybay not even from the car at all. But i started with a clean floor. It is bugging me. I will post a pic of it later. And i found it near the pas side front wheel well. Thanks