These are air springs. NOT bump stops. That said, there are some available with bump stops inside them- if you want to pay $200 for a spring. Nope!
I know something has to be under the vehicle to keep the axle in place (DUH?). But my point is that there are people running stripped down leafs (removing all but the main and maybe two longest) which does that job, and air springs doing the heavy lifting (literally). An antiwrap bar would of course be a good idea for us in the offroad community if doing that. Maylbe a panhard as well, if we are seeking the best of both worlds (and I am).
10 inches is definitely a tall bag. There are different bags available (rolling lobe, convoluted, etc). I went with these because they suit my build- my SAS S10 is at something like 11" of lift from a factory truck (I've got SOA front/rear, Dana 44s, etc). A lot of tlhis can be addressed with bracket locations. I want to run the cradles posted above so went with the 6" round double convoluted bags, as I have something like 18" of wheel travel. My build is very softly-sprung, I basically built it as an expo rig with DD in mind. I can nearly max out my 5' hilift jack before I get a wheel off the ground (which is why I mainly use bottle jacks when needing to do a tire change, but that gets into another discussion).
(EDIT: on new computer, lost part of the post..)
I'm investigating the impact of line size on fill rates- the bags I ordered have 1/2" fill ports, and I understand some people are able to make the vehicle jump off the ground when using 1/2" line. NOT what I'm after. I want to be able to adjust ride height on the fly given different parameters- so I can kneel the truck when parked to make it easier to get into, or load the roof rack. Don't need to lay frame, and that would be rather impossible with a solid axle vehicle anyway. I'd like to have it drop a couple inches (low clearance, small deflection for steering)when driving on the interstate, or going to maximum height needed when doing parking lot maneuvers (slow speed, high deflection of steering). To do so I'd need the ability to move across about a 6" range of height in 2 seconds or so. This would be a future upgrade, for now I want to get the bags in hand and scope out mounts fore/aft to stiffen up my spring rate. I am getting rather alarming body roll (better addressed with a swaybar, but that won't do all of it) and excessive front end dive under braking (definitely comes down to weight/spring rate). I added a 5/7L V8 where a 4.3L V6 used to live- difference is something like 100 pounds, IIRC. I will also be adding a heavy front bumper, winch, and hilift up front. I could get with any of a number of custom spring shops, weigh the corners of my truck, and hope for the best.. for probably $400/corner. I can put $1500 into the springs, or a couple hundred into supplemental air springs and gain more features. This is why I'm doing the air springs.
First stage of the job will be checking for clearance and fabricating bracketry, installing the springs as supplemental, "dumb" units with an external air fill. Then in the future I will look at going with onboard air (likely a ViAir compressor, with the sliders as tanks), 4 valves (fill and dump for front and rear), stripped down leafs to investigate the ability to control height. After that, it gets into an imbedded controller, probably built on a RaspBerry PI.