So is it worth it to just lift my truck the way it is now or should i go for the sas??? i want to go threw the rubacon and do some nice rock crawlin ...... i just dont know if my front end is going to be ok with that..... and i want atleast 6" of susp..... lift
Here's some info that might help...
Your stock front axle should be a Dana28. It is notoriously weak and would not stand up long on trails like Rubicon.
However the Dana35 axle from a later Ranger or Explorer is an easy direct bolt-in swap (outside of having to shorten the front driveshaft about an inch). The D35 has numerous parts in common with the Dana44 from a F-150 and is very close to it in strength (should handle 35" tires no problem).
No suspension lifts currently available for TTB suspensions are really geared for crawling out-of-the-box (the coils are all much too stiff to flex well), however the suspension design itself is certainly capable of it (just check out my
Bronco II Cardomain page). Some figuring for the correct coil springs will be needed, and of course it's almost a guarantee that the steering will very likely need something beyond the too-short drop pitman arm that typically comes with a lift kit.
If you're good at figuring things out and don't mind tinkering with it a bit, you can really do some wonders with the TTB setup (I've taken mine through many of the trails in the Sierras (Rubicon included) and it's always performed just as well for me as anything else).
One thing in favor of the SAS though is that the steering geometry is not as cumbersome to deal with, and lends itself to taller lifts better. If you actually must have 6" lift in the suspension (along with enough flex for crawling), this might be something to consider. But also remember, the more lift you have, the higher your center of gravity will be. A 4" lift + trimmed fenders (and/or a short body lift) will easily let you get 35" tires under there, which for most uses should be plenty.
Hope that helps some.