It is not likely to just bolt right on. If you are a decent jack welder you can probably make brackets to fit it on, somehow. If I remember correctly, the frame wraps around the front, attaching on the mounts just forward of the front axle, then again at the engine bosses where the engine bolts to the tranny, and finally at the rear axles.
Take a jillion pictures of what you have at those points, and measure like crazy. Do the same at the 1600 unit. Probably it will not be easy.