I checked several other parts companies and the only one explicitly listing a suitable bolt kit is this one https://www.amkproducts.com/i-kits/pontiac/?year_=1968&model=Firebird&category=499 However I was surprised that it contains only 12 pieces - 8 bolts and 4 spacers. After asking them they replied that originally only 8 bolts were used and the outer most holes were left unused on my engine configuration. Can anybody comment on this? I tried to verify this information - without success.
