You can add your location to your profile..makes it easier for guys to answer some of the questions.
If you go to Courtesy its actually a Villa Park address. I-355 to North Avenue, go east a few miles, just after the railroad tracks turn right on Addison Rd. They are upstairs in back of the body shop. Victor is the guy to see, if he isn't there you talk to his brother. I first started going there in about 1998. Stopped in a couple weeks ago just to make sure he's still around and was pleased to see them.
If you need any welding stuff Terrace Welding Supply is a huge supplier in the western suburbs and they are right across the street.