216 was the standard equipment engine, the 235 was the hi power option. Which is a laugh by today's standards.It is the original 235 that someone painted orange. the original for 58/59 trucks was gray, I have the original paint and valve cover decal for it. It will look like the one pictured.
If you ever go in the bottom end of it, you'll be shocked. It just squirts oil at the connecting rods, no oiling from the crank.