I found this not too far from Astoria. I have not contacted them yet. I have not completely got my set-up finished as of yet.DEER ISLAND HOMEBREW CLUB and HOME BREWERY
If you want super cheap. Go to your local thrift store and buy a stainless lid for a old pan for a couple of bucks. Spend a couple more on a drillbit and go to town. Could be done for about 5 bucks.
First off I mainly work on Fords. This time of year I would make sure there is not any small stones or gravel stuck in the bottom of the coil spring. Sometimes they will make a creaking or popping noise as the spring compresses.
Also if you can make the noise while bouncing on the fender...