hi all i've been slow building a 3.0 from scratch and now are to some areas where i have zero knowledge about the car first, i've read some of this thread and searched but need some quick answers about the diff's, is alloy cases and a good shim job all they need to handle some real power or are there some AMU's that cost insane money? and also which mt/mt2/mt2ss/mt2 3.0 has the best gear ratio for top speeds i am also building the truck to be the fastest in my garage.