A500/A518 to Gen-III

Ronald, I agree - how is the 727/904 kick down being addressed with the Gen III EFI swap? One possibility is a manual valve body?
Surely a manual SB isn’t the only way to address. I thought I saw somewhere (can’t find it now) that a guy “piggy-backed” a throttle type cable, from the trans to the throttle body, maybe? Would that be applicable on an EFI drive by wire?