Are there any solid motor mounts for a '65 Dart w/a 360. Mr.Gasket solid mounts for a '67-72 fit but the bolts only go through 1/2 of the nut. This is for a strickly track car about 450-500 HP. I prefer not to use a motor plate if I don't need to. I could rework the solid mounts or build new ones but I'm looking for an easy way out.Thanks