I use the same one from the link above on my '37, it made a huge difference on it as well.
Just google '50 chevy truck sway bar, there is only manufacturer but lots of dealers to choose from.
Joe
Joe, do I understand correctly that you used the 47-54 sway bar on the front of your '37? How was the install?
Has anyone put a sway bar on the back of a '37 yet? Any suggestions?