Will a 4.0 liter engine and transmission from 1997 awd aerostar fit 1992 aerostar?

No, a 4.0L engine and transmission from a 1997 AWD Aerostar will almost certainly not fit a 1992 Aerostar. While both are Aerostars, there were significant design changes between the 1992 and 1997 models. The 1997 model received a significant redesign, including changes to the engine bay, drivetrain mounting points, and even the overall chassis. The engine itself might be *similar* in terms of displacement, but the mounting points, accessories, and the transmission's bellhousing and connections to the transfer case (for AWD) are likely incompatible. You'd be facing extensive and likely insurmountable fabrication challenges to attempt this swap.