I vote for #4 cuz i have that set up. 4,3 th350 duels with 4.7 rear is crazy with this set up. Most the time i dont even need the 4.7 but its so nice to have when i want it. Run a good cooler with fan for the tranny. I dont even use the stock cooler in the radiator. I just run a external with a fan and it hasnt even got close to hot yet.
