well i swapped a auto 3 spd into my std chassis with 5:12s and i am running 31s on it, i was thinking to swap in 5:83s to see if it would give me better hi/lo running but was also thinking of puttung the 4:24-1 reduction gears set into the trans.case, what do you think would be my best bet, what would the cost be on the gear sets??