Why two kits? Its the same stuff. The hard parts are what gets swapped. For your truck an upgraded planitary and a high capacity front drum would be nice. A good torque converter and a shift kit are a must. There is a sonnax low/reverse servo that has been recommended on here along with a higher ratio band apply lever.

 

because some 47re parts ( 47re being the cummins auto and the V10 auto, holds more power and abuse) can be interchanged with a 46re... but not all of them, it already has a light shift kit in it, a trans cooler from a 3500, and a south bend clutch lock up converter... so i got most of the parts you named... it just the company is i guess not to good at assembly, cause the last trans they gave me had a few nut and bolts that wernt tight... so it all exploded inside...