The data really doesn't lie in this case, and while science dictates that larger intercoolers will cool more it's been proven that a stock replacement unit can really have a
significant effect on cooling.
Our data (in the link below and which has been replicated in the forum review from a customer of ours) shows 40+ degree difference in cooling capacity from a stock replacement intercooler alone.
You can spend well over 2x the price of our unit for a larger intercooler (that requires relocation), but our (data-backed) argument is that you likely won't get 2x the cooling - just the cost.
Product page (and our data logs):
https://www.cvfab.com/collections/t...ercooler-2015-f-150-raptor-2-7l-3-5l-ecoboost
Forum review (replicated data by customer):
https://www.fordraptorforum.com/threads/cvf-titan-intercooler-installation-and-review.70492/