Chris, Drawing on all my experience of old cars I'm going to say the window motors are the same.Fords used the same window motor for four decades. Same for G.M. but not as many years.All front and rears are interchangeable. As far as your broken bolt buy an "easy out" set at your local auto parts store. This is probably a 1/4-20 bolt and you can buy a setup to extract the broken bolt without rethreading it.IF it comes down to taping the hole,go to a 1/4-20 "heli coil set" You drill the old bolt out,drill and tap the hole the next size larger, then screw the plug in allowing you to use the original size bolt. Good Luck Its not as hard as it sounds---but be patient and you CAN do it. -----Original Message----- From: Chris Lynch <creesto@xxxxxxxxxx> Sent: Feb 6, 2004 5:53 AM To: mailing-list@xxxxxxxxxxxxxxxx Subject: IML: <no subject> Gang: I found a guy listing many '66 parts. They are all for a 1966 four door and I own a '66 Coupe. There are 4 window regulators for sale that include the window motor and my question for you guys is: Even though the windows in a 4 dr. are smaller than those in my coupe, are the window motors the same? Some of my motors seem very tired and would love to get them up to speed for the approaching warm weather... And another thing: I was working on my other classic car, replacing the valve cover gasket, and as I was gently tightening down the bolts, one of them snapped off. I was quoted at least $65 to drill it out and re-tap it. My question for the list is: can I do this myself? FYI, ;the engine is an inline 6, 170 ci with 8 bolts holding on the cover. My thinking is this: for that much money, I could buy a nice tap set and be ready for the next time this happens on the same car or on my '66 Imperial Crown Coupe. Advice from those in the know, please!! Thanks! Chris Lynch 1966 Imperial Crown Coupe 1962 Comet 1986 Fleetwood Brougham