Back in the 90’s, Briggs and Stratton had a cart engine called Blockzilla. I tried to find the specs, but not finding it. I think it was a V-twin that produced around 33hp.
Hard to believe it could handle everything in this pic.
In this New Year's Eve special of the "No Laughing" series, the five Gaki no Tsukai members (Downtown's Matsumoto Hitoshi and Hamada Masatoshi, Cocorico's Endo Shozo and Tanaka Naoki, plus one more)…