Scarebird's kits keep the Mopar spindles and hubs. They give you calipers and rotors from common Chevy, Toyota, and such, plus brackets to mount the calipers (main item).
Hardly an expert, but Mopar spindles look a bit unique in that they don't have a steering arm. That is part of the lower-ball joint. I think most other U.S. RWD cars have an arm integral w/ the spindle, as do my 1980's M-B cars. There are so many things that would have to be correct for a Toyota spindle to work that it seems unlikely. Also, many models of Toyota and most likely those spindles vary, so we don't even know what the guy was talking about.