the ones exported to england had them as standard I am converting mine to big bolt pattern
It is in the resto book for my car , they also put on heavy duty suspension parts I have the hemi type springs on the rear and uprated front torsion bars , it handles like a sports car , and it is right hand drive they brought in about 650 to england in 67/68 not many left over here as the rust has got most of them !! I am only the 3rd owner