Shotts, what benefit would additional lift give you? You are already hurting in the gearing department so larger tires are not an option... Seems like you may start to get into the tippy zone...
IFS rigs are always limited regarding suspension lift. CV angles can only /\/ so much before you have frequent failures. For example, a 4wd Tacoma/4runner can handle around 2.5 inches of suspension lift before the CV's start to fail.
Drop bracket kits are used for larger "lifts" on IFS vehicles but drop brackets do not hold up well to hard wheeling. I have seen tons of bent and broken drop bracket lifts on Tacomas!
Even a coilover conversion (which I am considering as a FUTURE possibilty) will not give more than 3" of suspension lift.
Long travel? Sure, it can be done for the right money. Custom arms, custom CV's, custom fiberglass fenders, etc. Maybe $10-20,000? depending on options. But that isn't really for "lift", it's for suspension travel.
There is nothing holding anyone back from doing a SAS on their 100. Their have been several SAS Tundras... Just call AJ at BENTUP and tell him what you want to do. Oh yea, open up you check book, cause it aint gonna be cheap! Even the "kits" for the mini's are custom jobs, as they require cutting and fabricating.
Ok, so what crazy SOB is going to SAS their 100??? I'll buy the beer, torch off the old suspension, and grind everything nice and flat. All you have to do it weld, cause my bugger welds aren't going to be driven on! BTW, I want those CV's!!!