First off young newb here, Ive got a 2004 commonrail with a sh!tty 48re auto tranny. Now i pull cattle, horses, 4 wheelers, tractors and hay and couchs and yea all that good stuff but ive really had my interest peaked by a few swaps ive seen lately using 7 speed spicers so could someone shoot out some advice of going with a spicer or eaton over a nv5600 or g56