Lego Technic combinations: beast on the left side is 42072+42073 (BASH and WHACK) while beauty on the right side is 42058+42059 (STUNT TRUCK and STUNT BIKE). : r/lego
LEGO Technic BASH! 42073 Pull Back Car Racing NIB | eBay
LEGO TECHNIC 42072 Whack 42073 Bash for Sale in Sugar Land, TX - OfferUp