ok.. i can get a vss from a couple diff people.. what i am wondering is does it matter which one i use? i have a 91Z with the rpo for D8N.. autozone says D8G, D8M.. i can get the D8G locally from someone and also the D8N from someone else as well as the D8F,D8I... which is cheaper.. i just need to know if there is actually a difference in the sender or what. any help is needed... thanks