Just tested the clean original 3877203 hood springs I purchased on eBay. Unfortunately the spring tension is very weak and they do not hold the hood up. My hood is the original cowl hood so the 203 spring is the correct spring. Just like my original hood springs, they allow the hood to fall and slam shut.
I reinstalled the OER reproduction springs for now as they will hood the hood open but as soon as you begin to pull the hood down, I must hang onto the hood or it will slam shut. My only other option is find a better quality repro set of springs. I use the springs from Jegs that Iowa Jon used.
I guess we cannot trust a used set of springs.