The 03/04 Eaton isn't a direct bolt up to the N/A 4 cam motors, but it can be done. You'll need all of the top of the motor to do it. Also, due to compression differences, you won't see the same power level as the stock Terminators did.

I've had several people ask me about doing it, so somewhere I have a complete parts list.... I'll post it when I find it.