In stock form, with the exception of the Buick Grand National version, they were weak. Like with so many things though, with a little know-how, some heavy duty parts and lots of experience, the 200R4 is an incredible transmission with nearly perfect gear ratios, shifting characteristics, amazing reliability, high-efficiency, low parasitic drag, compact size and low weight. Nothing else even comes close for folks interested in updating their old Mopars. Now, with the availability of the bellhousing adapters, and functional lock-up converter features, its a win, win situation.