Not all of 'em are IFS, it was an option. For example, when you are looking to buy one and you want a Hilux Double Cab 2.8D you look at the model code. If it's IFS, then you will see LN107...if it's SFA, then you will see LN106. Someone out here must know how to read Toyota model codes besides me (even though I don't know all of them): Engine code, then chassis code. Land Cruisers are easy, say you have 1997 TLC Wagon (80 series) with the 4.5L engine (1FZ)...the model code is therefore FZJ80. For us canucks we see a 1990 TLC Wagon with a 4.2L Turbo Diesel (1HD-T), and the code is HDJ81. Or say you have a 1990 70 series mid wheelbase with removable top and the 4.2L Diesel (1HZ)...the model code is HZJ73. It turns out that "J" means Land Cruiser. Back to trucks (by the way all trucks and 4runners/Surfs have "N"), say you have a 1985 XtraCab pickup, with a 22RE...the model code is RN65. These codes tell exactly what you are looking at. The first letter or two indicates the engine (3B diesel in BJ60), the letter after that shows what type vehicle it is (J for LandCruiser, N for truck), and the letters after that indicate details of the chassis such as series, length, and what generation it is (HJ62 is newer version of HJ60).
Sorry to bore y'all, but this kinda stuff interests me. Anyways, the imported trucks aren't just renamed NA Toyotas. The Surfs have turbo diesels of course, but can also be had with push button 4WD a la 96-on 4runner, adjustable sport suspension, and coolest of all factory optioned Recaro interiors. For the Hiluxes you can get diesel engines, factory rear LSD, and solid front axles with heavy duty suspension. My truck had 5 leaves up front and 4 out back with 3 overloads.
My box may be small, but not useless.

I've had half a cord of firewood in it, 1400lbs. of hardwood flooring, eight 37" tires, 600 sq ft of cut up carpet, and 3 huge Mac tool boxes. I love it, plus I can just toss stuff in the back seat or bring along 3 or 4 friends. There are four main reasons I got my truck over a 89-95 domestic NA truck:
1. Double Cab and "versatilier" box, (quote from Tacoma commercial).
2. Diesel engine
3. Solid Front Axle
4. Rust Free condition of a 90,000km (56,000mile) truck.
Old pic