Crawl ratio gearbox

Just a shot in the dark, but has anyone heard of mating two five speed gearboxes together and then the transfer box. You would get a set of crawl ratios not to mention an overdrive gear. Excluding cost, extra
length, propshaft angles etc, is it possible.........
Thanks
Smokeyone
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why not a 700R4 with this
http://www.offroaddesign.com/catalog/doubler.htm
behind it ?
modify the 700 to allow lock-up in all gears

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Hi & thanks for the responce. Do you mean a manual box and a auto box mated together and why an auto box please.
Thanks
Smokeyone
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I mean a 700R4 auto, modified for lock-up of the converter in all gears, plus a double transfer case set-up

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