[chevyguy_72]

14 bolt rear and dana 60 front would be good upgrade... should handle the power fine...
dana 60 front are hard to come by for a decent price... you could also just upgrade your current front axle to 8 lug to match the 14 bolt...
OR
Use a 8 to 6 lug adapter on the rear and retain your current wheels etc... if youre not planning on beating it then the front should hold up fine...