The 267 was a smog-wheezer!!! Better find a boat that needs an anchor.

Small cylinders, short stroke, small ports, thin walls. Just BAD news for a hotrod.

If you leave it stock and just freshen it up, you could use it for a daily driver, but don't expect anything spectacular out of it.

If you put it in the 123 chassis from your other post, it would at least be faster than the skimpy diesel that Daimler put in...