Just a few comments on the Toyota parts (being a Toyota guy and all [img]/wwwthreads_images/icons/wink.gif[/img])
I am not sure what steering setup you are talking about, be it the IFS boxes for crossover steering or the solid axle boxes with the "push pull" system...
1. If you are talking about the solid axle boxes, they are plenty strong for use on a Suzuki - Toyota's haven been running big tires for years - I know for a fact 33" to 35" tires are no problem for these boxes, and 38's work well too...
2. If you are talking about the IFS boxes for a crossover type steering, This is what I use on my Toy with a swapped-in solid axle and 35x16 boggers... steering is EASY and the box is well up to the task. If it can do such a good job with my considerably heavier and larger tire'd vehicle, I can only imagine how well it would work in a Suzuki with 32's or 33's.
I don't want to get into a war of parts or brand loyalty, but I hardly think you would have ANY trouble finding Toyota parts far into the future... if anything, Suzuki parts are far more rare (look at the numbers of vehicles built and sent to the US - no arguement here).
If you want to stay with Suziki parts for sheer preference - that is fine. But trying to say the Toyota parts are inferior, hard to get, or just won't work as well (since you have not even drive a Toyota P/S equiped vehicle) is just not based in fact at all.
As a little side note... Those of you looking into Toyota P/S boxes, another variation that solid axle people are using instead of the IFS boxes is a box from some of the early 80's Cressida's... My understanding is that they are considerably beefier than the IFS boxes... who-da-think-it? [img]/wwwthreads_images/icons/smile.gif[/img]