TA-23 body is quite bad, and I have so much on my plate at the moment plus my parents want me to get rid of a car so TA-23 must go So yes 'giving up' is the correct term! I will still be working on a replacement ECU for ST162s though, just might have to test it out on someone else's car I think it's about time ST162s had a decent ECU option.
But - the 5S/3S will stay, although it's going to enjoy the addition of a turbo Going to stick it into an RA-65 Sleeka as a new project, plus (rear hatch aside) finding panels and stuff for a xA6x Celica is much easier than finding panels for TA23s!