Hello, my brother who is no more aircooled addicted sells those GB865 heads and GB590 manifolds
Heavily welded 040 101 375.2 castings ported by Clyde Berg
Bored for 94 cylinders or 92 Thick walled cylinders
40*37.5 valves
Ported and polished, Berg Hemi chambers
Flow benched to 53 LPS on slide Performance SF110
Sold with new spings, chromoly retainers, hardened keepers
GB590 matched manifolds by Clyde Berg.
Pictures following this link :
https://www.facebook.com/jeanmarie.grangier/media_set?set=a.10213364950909094.1073741832.1558458158&type=3Price : 1600€ plus shipping (heads & manifolds)
Feel free to contact him via messenger
https://www.facebook.com/jeanmarie.grangier