i always have the crawl box in lo though, but i bet i could hit 50 pinned out.
plus, the tread difference between a 40 and a 42 is huge.
all youre going to need is a 4.7 gear set to get you back down to crawling speed, otherwise its going to feel like you have a single case all over again with the 4.10s and 42s.
Callen