Rather than going to the effort and expense of putting
in a SBC, consider buying a MB sedan. Many used the same
4.5 liter V-8, and are available cheap. I've seen many for
sale here that have been wrecked, but have good drive
At some point, I'll need to do the same thing. My '73
450SLC engine is showing signs of age.
p.s.-if you do go with the SBC engine, I'd be interested in