AFAIK they only come in the drag link repair kits. I bought one 2 years ago, it was a Dennis C. -made kit, and fit perfectly.

Edit: I just realized I saved my old set, including the springs. Yours for postage. I don't know if '54's use the same spring as a 48-52 tho?

 

I wouldn't think it would be any different? Thanks for the offer! I am about to private message you.