To be honest, I’m not actually sure what the ratio is yet, it was one of those drop-everything-go-get-it-ASAP type of deals. I paid $200, but the guy most definitely did not know what he had. I’ve seen them for sale anywhere from $400-2000 down in the states. Depends on the rarity and what you actually plan on doing with the truck. Tire fryer or moderate street rig? Go for it, if it’s a good deal. If you’re putting down serious power, it’s much more cost effective to just get a 9 inch. The 454SS axle is a bit of an outlier in finding performance upgrades.