The original throttle cable through the 2S is just too small and would not get to the linkage for that ITB’s. I had a have a look at some outdated Toyotas for the wrecking lawn and found 1 that may in good shape from the 1989 SV21 Camry. It’s essential https://toyota-4age-engine-for-sa82198.thenerdsblog.com/45263858/detailed-notes-on-4age-20v-itb