Right gearbox gone have had a look on the spda chart,
currently i Have :
TY752VB3FA 3.454 2.062 1.448 1.088 0.825 3.416 1 4.111
want to replace with :
TY754VN1AA
Now the spda chart doesnt list for this but it does list above it
TY752VN4BA 3.454 1.947 1.366 0.972 0.738 3.416 1 4.111

so im assuming the ty754vn1aa is just a newer model but with same drives,

Assuming this is correct i wouldn't have to change the rear diff would I?

I have already re tapped a new starter bolt and got the gearbox but havent changed diff yet unless i have too,

Cheers