I had an old f150 with that fine old 300 six. That truck went almost 700k miles. Had the non Fowler inserts but ran fine. The frame finally rusted out.
I had a 72 amc yellow hornet x I bought in 84 from the salvation army for $100. Sold it three years later for $600. Wish I still had it. No problems at all. Cant say that about the 7i grand prix I “ upgraded” to.