What I have is a SVO block virgin never had pistons in it. Splade 4 Bolt mains siemese cylinders. Block is in new shape just the way it came from ford SVO back in the day. I want to get $2,000 for it but will entertain any offer. I'll send pics to your email. Cant find the sticky that tells you how to post pics. Thanks. I'll sweeten the pot for whoever wants it at my price I'll through in my brand new Holly Dominator intake that I have for it pics will follow.