Hey guys, I am trying to replace my vacuum advance and I don't know where to buy one with the correct angle on it. I bought one from Classic Chevy parts (Chevy Duty) and it isn't right even though the catalog says its for a 49-54 chevy. Their tech support said I could bend the vacuum line and make it work but the problem is with the hold down bolt and the distributor clamp screw which are interfering with each other. I have some digital pics I took to show the comparison but don't know where to put them so you an see them. I can send them to you if you supply your e-mail address. Thanks for any help.