Drawing is not correct
Different anti roll bar and shock/coilover location , other place as the earlier Pantera's
Also different rear uprights , same steering rack , longer tie rod ends.
Si's are total different , chassis , body's , doors , electric wiring harness are different .
An Si is not just a upgrade from an earlier Pantera, it's a total different build car.
much better to handle , like a go kart .