I built a buggy, to push cars, at the track. I call it Trash Rabbit, because it's built from salvage yard scraps, and is quick as lightning.
It runs an Iron Duke fuelie motor.
Just for kicks, I took a stock tubular manifold, and split it, 1+4, 2+3. Ran 1 1/2" pipes back, and put Harley mufflers on it.
Sounds really unique, but still like a chainsaw on steroids, when you mash it.