i am looking for a 471 roots-type supercharger for the early 70's 350 olds motors.

i have a 71 rocket olds that i am wanting to put a low profile 471 blower on, but i can't seem to find one. I also have a 455 if you can find a 471 for that one as well, that one is going to be put into a dually this summer.

plz help, i have been looking for these items on every major manufacturer website i can think of, and can't seem to find a kit to fit oldsmobiles.

thanks.:banghead: