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Below is one of the Yenko ads for the L78 blocks also flat hoods as posted a few years back in the Old Newspapers thread, there's others too around pages 29/30 as this link...
https://www.yenko.net/forum/showthre...135780&page=29
A few of the unique '68 MV Suffix L78 blocks have surfaced and some reunited w/ the original cars, here's a thread w/ the most recent circumstance...
https://www.yenko.net/forum/showthread.php?t=138489
~ Pete
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