I installed the Roush on my ‘22 PB. It is a little more throaty on acceleration but the sound is not too loud. The truck is still very quiet. My mpg went up a little. I like the way it sounds.
I have a ‘22 Lariat Powerboost with 22K and I get between 21-22 mpg and 25 mpg on highway trips. The only issue that I had was a leaky heat exchanger which my dealer replaced within a few days. Other than that it is a great truck
I have a 2022 Powerboost as well and love it. Ordered mine last November and took delivery in February. Great gas mileage and no issues whatsoever. I have just under 7,000 miles on mine.
I have the Smoked Quartz with the Stone Grey accent and just love it. I really don’t see purple at all it is more of a blue grey in the sunlight. If you choose this color you won’t regret it.
I would go for the 3.5 PowerBoost. I have a ‘22 Lariat PowerBoost with the 502a package and just love it. Loads of power and 22 mpg. You should have no problem towing your boat with the 3.5 PB.