Safe to run and drive?

Is it safe to run/drive with the block broken beneath the starter?
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I’ve seen this ad close to where I live at and I thought about getting it to get my 72 Dart going to replace the 225 that’s in it now. Mine had a blown head gasket so I ended up removing it and disassembled it which looks to be a good rebuildable core. He was pretty much firm on the price with me but he didn’t mention the broken part on the block as well as I didn’t catch that when I first saw the ad. I might consider selling my slant six but still deciding on either keeping it or going v8