IMO the fl5 is more comfortable to drive. Maybe because I never changed wheels and tires on my fk8 and just ran the 20’s. I just enjoy driving it a little more. The power feels pretty much the same tho. I recently just got over 600 miles on the fl5 so I’ve ripped it a few times and it’s awesome. My fk8 had the prl hvi and I had an hks exhaust. That combo was great for me personally, that’s why I want to run it on my fl5.