V-8 buick 6.6 liter vin k 1977-79

Oldsmobile V8 cylinder head bolts 1/2 77-up 307-455. 307,350,403 and 455 Oldsmobile engines. 307 vin y 1980-90 vin 9 83-90403 vin code k 1977-1979full set of ARP hi performance  head boltsalso used in some buick cars  buick 403 / 6.6 liter vin code kcentury 1977 electra 77-79  estate wagon 77-79 lesabre 77-79regal  77riviera 77-78some of the oem bolts may have studs on top caution these do not have themgm made the spilt to 1/2 bolts in 1977 check size...