Cant find the master cylinder I want

I'm sorry I don't have a copy of the last MP parts catalog. They had those numbers in there. Maybe somebody else does. You can cross those numbers to something over the shelf at like Autozone if you can find the numbers. It's a shame really. You used to could get all that stuff right from Mopar. If I remember right, I think it was the master cylinder from like an mid to late 80s Chrysler New Yorker or Fifth Avenue that you're looking for.....but I'm not 100% sure without the MP number reference.