Well i'll wager a guess the ECU is dead, despite having the ignition transistors repaired. No fault codes pop back up after a clear, but it had P0351+P0352 logged when i got a tester on it after it died. Iginition Coil A+B malfunction. New coils changed nothing sadly.

I think my current best bet is grabbing the key+ECU from a car at the breakers that has the same number, from reading about PATS should only be in the ECU, so if you move over the transponder it's good?