A friend has a 69 Jeepster Commando with the single leaf rear springs. He has changed them to a multi leaf spring pack he got on ebay. Length is the same but the single leaf springs have a very short rear shackle. Maybe 3 or 4 inches. The multi leaf has rear shackles maybe 10 or 11 inches long. We did not measure the uncompressed arch before we installed the new springs. Anyone know the specifics on these two sets of springs? The Jeepster doesn't appear to be any higher in the back. The longer rear shackle leads me to believe the multi leaf spring may be longer travel, and maybe softer spring rate? THANKS!