69 COPO Camaro Coil Spring.......code #'s ????????

[CamarosRus]

YP springs in Rick's Chart show 181-262 added weight.
I obviously dont understand these charts.

Chart in RICK's catalog (page 69) shows
L-34 add 209 lbs
L-78 add 133 lbs
other than intake where is diff between L-34 and L-78 ???
M-40 add 44 lbs
J-50 add 9 lbs Power Brakes
N-40 add 40 lbs Power Steering
T-60 add 6 lbs HD Battery
V-01 add 7 lbs HD Radiator

I repeat my above X-11 "COPO" has Headers, No Smog, but otherwise very similar top a REAL COPO!!!!!!!!!!