Models View all Monster Racer 7 64 2 ACS 12x12 CI Series Rotary Airlock 46 1823 6 Semi Tractor 71 2384 19 HHM1 Hit & Miss Engine 23 402 3 Car Trailer (Tilt Deck) 155 4379 14 Spark Arrestor 18 585 1 Education BSMET - Purdue University 2011