I just finished moving my steering from in front of to behind the axle. (From INCORRECT Akerman to CORRECT.) I used the same exact 10" DE ram in both setups. When the steering was in front of the axle I was using home-made hi-steer arms that were SLIGHTLY longer, less than an inch, but for the most part mirrored the stock arms. The new setup behind the axle uses the stock arms. BEFORE, with steering in front of axle, the knuckles bottomed out with about 1-1/8" travel still left in the ram. NOW, with the steering behind the axle, all 10" of ram stroke are used and the knuckles still have a little ways to go. (I could probably use another 1/8" to 1/4" of stroke if I had it.)
So I've obviously got way sharper steering now with the knuckles in the positions they were intended from the factory. The extra 1.125" of stroke I am using now as compared to before equates to roughly 6* of additional steering in each direction with no modifications to the knuckles, just using Ouverson shafts, and there is no shaft binding. (Stock steering stop bolts removed completely.)
The interesting part to me is that in BOTH configurations the knuckles were the limiting factor. IE, I turned them until they bound and set the ram stops accordingly. Yet, I am obviously getting more angularity out of the new setup than the old. So, at least in my case, running the knuckles opposite factory intent, with opposite Ackerman, and steering arm pointing toward the front, I was not only limiting steering capacity by having opposite Ackerman (Inside tire was wanting to fight outside tire in turns.) I was also limiting my overall knuckle angular capacity by having the knuckles bottom out before they normally would. It was a double whammy of steering suck which explains why my rear, with its correct Ackerman, was so much better than my front before I switched.
I know 6* doesn't sound like much worth worrying about, but figure that it is about a 20% improvement from before + the addition of the tires not fighting each other in turns and I feel like its something worth at least giving some consideration to. Plus, I eliminated a lot of weight from the axle and my steering is way more protect behind the axle itself now.