Can you replace a Forester 2801QS frig with a larger 7 cu.ft?

[Long Leaf Piners]

As Froggers for years, we're now thinking to change from our Flagstaff Fifth to a Forester.. We've posted this question under "motorhomes" without response, and are hoping the general community ( or tech) could help with an answer.
We're researching moving from our Flagstaff fifth with a 7 cu.ft. frig to a 2017 Forester 2801QS. But when we visited the unit, we're disappointed that the QS frig storage is so much smaller than ours. Has anyone replace a standard Dometic DM2652RBX with a larger frig? Thanks everyone. Our window to purchase is small, but the question is big.