It's like the little brother to the Navigator. Made in 03-04. Kind of like a "Lincoln Explorer". You could get an explorer with a 2V motor, but the Aviator came with the 4V motor. 4.6 DOHC aluminum high compression motor. Same long block as a mercury marauder or a mach 1. Since not too many people know about this junkyard treasure, you can get yourself a perfectly good DOHC motor for CHEAP. Sure, it's not forged, but for how cheap you can get these motors, you can install a forged rotating assembly, perhaps even a stroker crank too for less than the price of rebuilding a trashed 4.6.