I agree with Hotrod - You need to find a new parts store! BUT, sometimes a DIY store can help you just as good as a Pro Shop. You just didn't happen to have any luck there. I am a Store Manager for Advance Auto Parts the second largest automotive retailer in the world and I would much rather cater to the old car enthusiast than to the person driving the brand new Lexus. The person with the older vehicle usually has a clue what they are talking about.
You need to find a "PARTS" person not a counter guy. You need someone that knows how to read a parts catalog because the info you are looking for is not readily available. AC44's are still available and if you find a "Parts Guy" you will find what you are looking for.
Thanks
Jay
