"The truck had larger brakes than the CJ5 did.....as you had the Spicer axels adn the CJ had the Dana axels."

It was the 2WD version with Willys' own design of independent suspension. The lower control arms were the spring, a transverse leaf spring like an old flathead Ford. It was similar to the Planar independent used by Studebaker in the 30's.

"I would not have believe someone built a motor with the intake valve in the head (and a big one too) and had the exhaust valve in the block............."

This was a very sophisticated design for the time. As you noticed, it allowed for a much bigger set of valves than you could fit in an OHV head over such a narrow bore. And it gave a better combustion chamber shape than a flathead. Rolls Royce featured an F head design for years and so did several other high grade cars of the classic era. It only became obsolete when the short stroke, big bore type motor allowed larger valves in an OHV engine.

In the old long stroke engine days an OHV was inferior to a good flathead because it was restricted to such small valves. The F head combined the good points of the flathead and OHV designs.