i have a dana 300 behind the AW4 in my manche, but even if i install a 4:1 kit in it, it still won't be enough for 42's. i need lower gearing. i hear the AW4 is the same tranny in automatic toyota mini trucks??? if so, is there any way i can slap in some yota dual cases??? is there any other route to take besides a stack box or atlas??? i've searched but, so far, came up empty. thanks.