Impact in the MAs? Spit14 has minimal if no impact. And it's perked....
And many of us have advocated it getting the Ta152 treatment and be unperked because of it.
Heck, I'd happily make the trade to have the Spit XIV unperked and the Spit XVI perked. Of course, the Spit Haters Club will shout down any such suggestion. They want the Spit XIV perked, the Spit XVI perked and I have no doubt they'll want the Spit VIII perked. I still remember the calls to perk the Spit IX, which would likely return after the Spit VIII was perked.