I'm getting ready to build a warmed over 289 and going to put 302 rods/pistons/crank in it . I do not intend to drag it just like it to go when I floor it

. A friend of mine brought home a set of digital scales from work and below is what I found. All weights are in lbs.
Rod Weights
TE206 1.189
TE360 1.188
TE480 1.186
TE478 1.186
TE429 1.186
TE200 1.186
TE203 1.186
TE275 1.187
Piston Weights
A 1.702
B 1.707
C 1.702
D 1.700
E 1.699
F 1.700
G 1.706
H 1.702
Rod+ Piston Weight
TE206 + E 2.888
TE360 + D 2.888
TE275 + F 2.887
TE480 + A 2.888
TE478 + C 2.888
TE429 + H 2.888
TE200 + B 2.893
TE203 + G 2.892
I have been debating on getting things balanced but after seeing this I'm not sure I really need to . Input welcome and Thanks .