'68 thru '70 170 blocks...5 core holes?

Well,good luck w/that,lol!! Unfortunately, rarity has to be accompanied by popularity
in this hobby if you want to see any $$$$$$$$,so i wouldn't plan on funding a nest egg
w/it!! Super cool little project tho', thanks for taking the time to look,hopefully someone
with a base V100 or 170 will chime in here. My plans for this eng. are a turbo EFI at the
3.0L disp. level for road&track games,not drag action.