well i finally picked up the D70HD ive had my eye on for a while. my setup is 350tbi/700r4 with 42's and the truck is going to be driven on the street and wheeled when possible. i had 5.13s and 39.5's before and on the highway the truck didnt wana stay in OD, so im thinkin that going with 5.86's and 42's with the 700r4 would allow the truck to easily stay in OD when going 60mph+. what do you guys think? its either 5.13s or 5.86s (d70's dont have 5.38's).