I have an Chrysler crossfire base chassi. It is supposed to be converted to an srt-6 car.

Right now it is only the chassis that is basic. The rest have been switched out.
it has srt-6 devil wing. Srt seats. Dash is srt-6. Keys and immobilizer and ecu is from srt-6. Engine wiring is from srt-6. The only thing that is not changed is the solenoid box and RCM box. That is still from the base car.

And the transmission is also from base model. I will not change brakes differential and springs. I will leave it as the base model has it.

I need some help with getting the 6 speed manual to work with the ecu. Can I decode the ecu to manual transmission and just use the 6 gear transmission?
It can i use a stand alone megasqurt next to the ecu to get it to work?

I know I read many threads it can't be done. But I am sure if the ecu is set.to manual transmission it should not hassle I think!? Any ideas?