Can i convert my ’97 Camry to a hybrid? Using the engine and battery from a wrecked hybrid?

camtheman123 questioned:

Ive seen a few wrecked older Honda Insight hybrids for $2-3000. would i be able to just drop in the engine and drivetrain? even if i place all the gears in (dashboard, ECU, etc) will it be able to take the camrys consequence? is it value it?
im thought i can get the engine and parts for around 1200. and my camry gets about 20 Mpg now. not excellent. the modest insight gets like 60 mpgs. what mileage would i get if i do this succesfully?