I appreciate the input, but I guess I am just having a hard time understanding the "distrust" of the single circuit system. My reasoning being Toyota sold Land Cruisers for a decade or more with this system and people seemed survive some how on them, don't think Toyota would still be around if the case was different. I hope I am not coming off as a smart ass but it seems to me that the chances of a massive failure of the single circuit system is minuscule. I am not by any means arguing that dual circuits aren't superior, rather that I am willing to take the minute risk for the sake of doing a proper restoration. Maybe I am crazy but as I said before I drove my 1962 FJ40 with single circuit drums for several years and 1'000s of miles with no issues at all.
I doubt this LV will ever see anything other than back roads thus I am comfortable with keeping the single circuit system; hope I don't eat my words