69 dart GTS decode !

Couple questions sir seeing you seem to know your way around codes? I have an M25 wide sill moldings in my fender tag but for the life of me I have no idea what that description refers to? Secondly where would one find a code that states car came with fenderwell/rocker panel moldings? My car is a 69 GTS and I have no idea whether they were stock from the factory with the GTS option or if they would have had to be ordered?
M25 is the code for rocker mouldings, these run below the door along the rockers from front back dog leg of front fender to close tho the front of the rear wheel opening.