i really need all the help i can get

im joining this forums as a last hope. i own a 1990 mazda 626 Lx and some things have started going wrong. 1st of i need a window regulator for my drivers side passenger window. i cant find a website that has any in stock. i also am looking for an exushust system, a body kit, and Euro lights for my car. every website i have looked at has only got them for 93's and up. any help from anyone could really help. please please help me!