I would like to replace my existing leaf springs with a new slightly shorter set. I have a 37 Plymouth sedan with the original springs and although they support the car fine thet lack side sway stiffness and the spring length is a little long for upgraded shackles. The present springs are 5 leaf 54" long by 1.75" wide units. The rear axel weight at the tires is 1,730 lbs. I do not have a welder and I cannot weld, so I would prefer to reuse the front spring perches rather than replace them. I have considered Eaton Spring but they want between $400 and $500 for a set and I think I can get a set at the bone yard for a lot less. Any suggestions?