Going off memory here, could be totally off...
Brakes: Alfetta ATEs w/ solid rotor, GTV6/75 Brembos w/ vented rotor
Torsion bars: Alfetta thru mid GTV6's are shorter, beginning in 85(?) GTV6s and 75s went to longer bars. Bars got thicker as production went on Alfetta < GTV6 < 75. Ditto on sway bars.
Rumor is the Alfetta rack will fit on the 75. JJ and Jes were looking for a short ratio Spica Alfetta rack for their track cars, i dont know if it was for the guts or the whole rack.
Brakes: Alfetta ATEs w/ solid rotor, GTV6/75 Brembos w/ vented rotor
Torsion bars: Alfetta thru mid GTV6's are shorter, beginning in 85(?) GTV6s and 75s went to longer bars. Bars got thicker as production went on Alfetta < GTV6 < 75. Ditto on sway bars.
Rumor is the Alfetta rack will fit on the 75. JJ and Jes were looking for a short ratio Spica Alfetta rack for their track cars, i dont know if it was for the guts or the whole rack.