I have to agree with Max on this. The sbf is narrower than the sbc which makes it perfect for the import trucks smaller frame. Just because its smaller doesn't mean its not powerful. The sbc has become the "standard" in engine swap because of the parts being cheap. Cheap they may be, you get what you pay for. Plus with the sbf it has the distributor in the front, no hacking of the firewall.
As for myself I think the whole v8 swap is played out especially the sbc thing. Later this year I am swapping in a 3.8 supercharged v6 from my old Tbird.
anyhow, heres a link that you might find useful
http://www.mindspring.com/~jayk3/toyota/swaps.htm