You will need to do some slight modifications but nothing major.

Mainly jsut a little hose relocation to allow filling and draining. You will understand once you see the bags and the size difference. I havnt installed mine but will be doing that soon.

Theres enough others with the 750s they can say exactly what they did to accomidate the new larger bags.

They are a drop in replacement.

Just a tip when you buy the new bags, get new fill and drain fittings for them. The factory bags have the fitting heat glued on and are a real pain to remove.

Theres a few threads about that.