The engine topper is quirky addition.
“1952 jeep willys ratrod. Custom. 360 v8 with 350 turbo trans. Must see to appreciate. Sell for $7500 Or willing to trade for something cool of same value.”
https://stlouis.craigslist.org/cto/d/52-willys-ratrod/6397173231.html
Looks like the cowling off an Evinrude outboard
70 hp 3cyl engine