and welcome to the boards FLchevygrl.....
check out this web site to decipher those SPID codes
http://outintheshop.com/options.html
A11 : TINTED GLASS
F51 : FRT&REAR SHOCK ABS
F60 : HD FRONT SPRING
G60 : AUXILIARY SPRING EQ
M24 : HD 4 SPEED TRANS - NP
not sure on the last one your BF wrote wrong
