If yours has 063 (round) then the 096 (round) is the bigger swap
If it has the 085 (flat) then as we have said its the 095 (flat)

To be honest I lost it ages ago as to if you have round or flat posts or even round with convertors etc so went of your 063 original posting details.

There will be no need to change the alternator.

Why do you need bigger ?