My dad has a 1930 Chrysler Model 66 with a Delco Remy 639x distributor. I've been helping him search for some parts for it. We've found quite a few places with tune-up parts, but have been unable to find a vendor who lists mechanical parts for the advance mechanism, i.e. breaker plate, weight plate, weights, springs, etc, for this particular distributor. We were discussing it, and agree that Delco had to have used some common components, and that there was probably a cross-reference on these parts, but have yet to find anyone who has any info. For example, we found that the 29-34 Studebakers used a 639J dizzy, but have no way of knowing if there's any common components. Can anyone help? Please reply to msedlack@neo.rr.com, since I'll probably forget to check back here. Thanks, Mark