The cable driven choke will not work with my Autolite 2100, with an underhood manual choke, without modification. The tang on the carburetor choke assembly is too big to go into the cable choke catch. Oh, and "good" news... Ever loose a bolt? Well I have... I apparantly lost a valve cover bolt (I replaced them) when I changed to an aluminum valve cover. I found it tonight, it was inside, by the rear rod. It is getting very windy out, so I did not complete the job yet.