See, now that's just WEIRD.
Rocky Road Outiftters swears that the 912 spring is 1/4" longer than the 913.
I'm stumped. It probably doesn't matter much...especially since I've already placed my order...but it shouldn't be so hard to find out the real difference between springs.
The ARB website is useless in that regard, BTW.
I'll report back when I get the springs installed. Maybe a week, since RR will ship them on Monday. Or Tuesday...isn't Monday a holiday?