Mid plate mounting

Mid plates tie the engine to the chassis in the most critcal area.
Front plate does not change the necessity.

I don't agree with the flexplate spacer to cure midplate spacing. If you look at the pilot in center of torque converter it has a flange that pushes against crank. If you use washers or flexplate shims the pilot is still .090-.125" out of the crank. When the converter is charged with 100 psi of pressure it pushes converter into crank bending the flexplate. Better to have the converter made for the midplate. Although many of us have successfully ran converter bolt washers or flexplate shim, the before mentioned is the proper way to do things.

Midplates are a great addition to any car tube chassis to stock frame rails.