This guy has some for sale: http://www.buickperformanceclub.com/NewBuickValveCovers.htm The 400-430-455 valve covers are the same.
That's what I want ! I tried the number is no longer in service and no email response! KEEP LOOKING FOR ME PLEASE!
http://www.v8buick.com/showthread.p...ed-Aluminum-Valve-Covers-NICE&highlight=VALVE May have a used set as well.