Trash that engine & put in a slant six!
Best engine ever built.
I had a young fella tell me the engine in my truck was in sad shape. “Just listen to those valves rattle, you need to rebuild it quick.”
I told him I would worry when the valves *stopped* rattling.
Drove another 6 years with no problem.
Fella I sold it to still drives it every day.
The valves still rattle nicely.
30 years later I still miss that truck.