What suspension parts should I consider replacing at 135,000kms

[RevNev]

Thanks.

Is there a preferred brand / type?

What is the OEM strut top?

OEM or aftermarket rubber strut tops are good.

Are bump stops part of the Monroe GT sport unit?

I have read they have softer smaller bump stops?

Yes, they come with new bump stops that are shorter, but I don't know if they're too much softer than a new OEM bump stop.

Are these the right ones?

Do I need 2 or 4?

Yes, and you need 2, one for each side front.