im not saying it happened 1st in cali.. but i would bet money that the mexican homies were among the first few to start modding them out! I only know this because my mexican father has been in the body shop industry all his life as well as his father before him... I have talked to him alot about the way they used to do things in the 60's and 70's!

i think that cali initiatted it in the states but not the world