[Entreri33]

Why go to the expense and trouble of a supra engine???

Get a 3.8 series I out of a grand national or GNX you can make all the power of the supra and have the lower cost of an domestic engine.

There was that one supra7 in a magazine and they said it was a very hard install.

There are also kits to drop GM V8's into the car and the LS1 wieghs less than a straight 6 so the balance change would actually be less than the supra engine when finished.

But I doubt that the mazda rear end could handle the torque of any of those swaps so you would need to upgrade to a Vette or Supra unit and axles. Not to mention the Mazda tranny would have to go as well in favor of a LE60 auto or a T56 manual.