ThatFabGuy -
If I were to run the 5.5" coils and either use their lower buckets or build my own, how much higher am I going to be in the front?
Also plan to buy or fab extended radius arms... I should probably wait until then to order new shocks. I am guessing b/w those and the 5.5 EB springs, I would have quite a bit more down travel?
If I were to run the 3.5 EB springs and just sucked it up and used the StoneCrusher system with the heims, is it streetable? I think the dual shocks would help, but I don't really need all the lean and I load it pretty heavy with camping gear. Any other coils that would work well?
To answer your questions in order:
If you are running this on TTB you won't want to use the Duff 5.5" EB coils unless you cut some off the lower coil. As is, they will give you between 8"-9" of lift. I am running them because I have now done a SAS and am running 37" tires. You will want to find a 3" coil that has around a 300 lbs/in rating to get the right amount of lift for the TTB. When I had TTB I ran the Duff 3.5" EB coil that was rated at 225 lbs/in. It flexed more than enough, but daily driving was out of the question. The springs were so soft that the heavy Ex collapsed most of the windings and I could bottom them out on a speedbump. The body roll was damn near dangerous. I got the correct amount of lift but needed a stiffer spring for the heavy schoolbus.
Next, the lower coil retainers were my doing, you cannot buy them from Duff. You can buy their EB HD coil retainers and weld a foot on them and drill a 3/4" hole in the middle (what I did).
I would wait to buy shocks until everything is complete. You will get enough down travel that you will have to open the window on the beam. I used my Duff shocks as my limit as they have built in bumpstops. If I pulled them off I could banjo my extended brake lines. I figured let the shocks do it instead of what's stopping me.
The SCS is very streetable. Anthony has been very busy making these systems since my first posts naming him as the vendor. I expect you will start to see more write-ups about the SCS. As far as I'm concerned, anything extreme runs heims so as long as it's OK where you are, it shouldn't be a problem. Heims are cheaper to replace than TREs and they both wear out. I would like to see Anthony come out with a TRE version so that everyone could get it without worries. He is a great guy and stands behind his product 100%.
Dual shocks really don't do anything as far as the leaning, that will be controlled by your springs. Dual shocks do smooth the ride out and when wheeling cut the job of each by 1/2 so you don't get squishy shocks.
Hope some of this helps you out. If you have anymore ?s I'll try to help any way I can. If I had it to do all over again (or on my next rig) I would keep the D35 and do the 5.5" EB coils cut to fit the 6" lift brackets. 35s. Lockers front and rear and wheel the **** outta it. I like my new SAS but then you have to step up a notch on your wheeling. With the TTB you'd always be looked at as the underdog and could drop jaws anytime you done something half-assed difficult, with the SAS people just yell at you to hit the hardest stuff.