If you've ever placed an order through the Muscle Car Research online store you should be able to access your order history here. You can login to this site using the email address from your last order as your user name; you will probably have to use the "Request new password" link to reset your password. You can change your user name once you get in. Please contact me if you don't remember the email address you used with your order.
AMK is shipping their reproduction voltage regulator covers again, so I can resume my cover swap service. Prices have gone up a little because the cost of the regulators has gone up. Price and product information can be found here:
I'm currently working on a reproduction of the C7TZ-8123227-A front door window regulator handle spacer used on 1969, 1970, and 1971 Ford Mustangs equipped with a deluxe interior. This foam spacer fits on the regulator handle shaft just under the door panel. Here's a picture of an original spacer:

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I've had a few requests to offer separate rebuild kits for the 1967 - 1969 proportioning and distribution valves from people that don't need to rebuild both valves. Separate kits are now available.
Proportioning valve kit:
http://www.musclecarresearch.com/valve-kit-wagner-prop
Distribution valve kit: