Well It's odd that the springs would have any difference to them. On my truck they are identical and as far as i know my springs are original to the truck. (judging by how loose they are now.)
Seeing as one is longer, If you have some time to waste i would swap them around and see what happens. I'm pretty sure you can put that stuff on bass akwards and as long as you are slow and careful while closing the hood the first time you shouldn't damage or bend anything. Once you eliminate all the wrong ways you will only be left with the right one. So i would swap the springs around for a little and if there is no "right way" to do it then those springs may not be the same as the factory set. any pics or link to he springs you bought would help out. until then good luck


62' GMC Fleetside 3/4 ton 235 4-speed.
Time makes fools of us all.