You might try Russell Engineering in Westfield, Il. I know they used to do stuff like that. Westfield is about 30-40 min. away on I-70. If you want I can give you directions. I just don't have their phone # anymore.
rick
P.S. I grew up in that area, that's how I know about them. he did some work for me a long time ago, and i've never had a problem with the jobs he did.