I was thinking along these same paths lately but wanted to lower the rpms a bit more than the old two speed would allow. So ordered the wilcap adapter for the chevrolet automatic yesterday and plan on installing a 200r4 I have in the barn. All in all I didnt want to do it at first and wanted to rebuild the old fluid drive. The reseal kit from Andy B along with a new clutch and other parts needed will cost way more than the conversion parts . I think the biggest plus for me is lowering the rpms on the old girl, not to mention saving this old knee from further workouts. The ebrake will be a issue but I might be able to fabricate a bracket . I don't want to change the rear end unless I have to. Time will tell. This should keep me busy most of the winter. Don't quite understand how things started to get harder to do than 45 years ago. Ya think its because of the water?