Project 22: A carpenter needs a dumping attachment to fit in her pickup truck so she can dump building materials.She can't afford to buy a dump truck. Project 23: The carpenter in Project P3-20 wants an inexpensive lift gate designed to fit her full-sized pickup truck,in order to lift and lower heavy cargo to the truck bed Project 24: The carpenter in Project P3-20 is very demanding(and lazy).She also wants a device to lift Sheet rock into place on ceilings or walls to hold it while she nails it on. Project 25: Click and Clack,the tappet brothers,need a better transmission jack for their Good News Garage.This device should position a transmission under a car(on a lift)and allow it to be maneuvered into place safely and quickly.Project 22: A carpenter needs a dumping attachment to fit in her pickup truck so she can dump building materials. She can't afford to buy a dump truck. Project 23: The carpenter in Project P3-20 wants an inexpensive lift gate designed to fit her full-sized pickup truck, in order to lift and lower heavy cargo to the truck bed. Project 24: The carpenter in Project P3-20 is very demanding (and lazy). She also wants a device to lift Sheet rock into place on ceilings or walls to hold it while she nails it on. Project 25: Click and Clack, the tappet brothers, need a better transmission jack for their Good News Garage. This device should position a transmission under a car (on a lift) and allow it to be maneuvered into place safely and quickly