This the first 68 DZ block I believe I have seen.. ::)
Someone needs to go back to photoshop school.. Surprisingly I asked for better photos of the stampings through text and I havent heard a peep..
https://nashville.craigslist.org/pts/5475589543.html (https://nashville.craigslist.org/pts/5475589543.html)
I haven't seen the inside of an engine lifter valley with Glyptal since my racing days in the '80's.
Mike