i am going to have a th400 built for my plow / play truck. i have a few extra bucks. i was looking at a lower 1st/2nd gear set. would it be worth the money for the extra low ratio. and no i dont want a 700 for this truck. to darn wimpy. and a 4l80-e is the same ratios as th400 just overdrive. and do any of you have good places to pick up a gear set cheep.