OK, I'll try to answer the question.
Mel (Offroad Evolution) talked about transfer cases and briefly the 8 spd auto.
He was talking about the 8 spd auto has a 4.7 to 1 first gear ratio, now compared to JK with the 5 spd auto with a 3.6 to 1 first gear ratio the need for the 4 to 1 (rubicon)...