Tuned 99.5 ECU swap to 2003?

I have a 99.5 that dropped a valve at 180k, so would like to rob the larger injectors and the tune for my new project, a 2003 ALH. I know the wiring is different but is there any hope in a chip swap or swap software side?

different harness/ECU, would be better off selling the 99.5 ECU

I figured, to bad really. How different is the wiring?

Edit: looks like that’s a no on harness change.

On a side note:

Clutch: worth swapping to the 2003?
Injectors: the 99.5 has larger injectors but one is toast, is buying a single worth it or should they be matched?

The ECU is going to be generally incompatible with the rest of the car. Different number of pins, and I don't think the CAN even runs at the same speed.

-J