With the ever developing mosfets such as the SD2933, VRF2933, SD4933 and SD2943 and LDMOS BLF188XR/XRS BLF188 transistors, and the increasing wattage of power inverters, how feasible would it be to build an A/C setup for mobile use? The SD4933 is a 300W pill at the current cost of an original Toshiba 2879 (roughly)....$136.00 and the complete boards, less pills, can be had for 1-250 dollars.....just doing some late night figuring, opinions?