IF the posted flow numbers are accurate then it’s danm close since most W2/5’s don’t go past 315-ish cfm. There OOTB head as listed is just a few cfm shy.
There is WAY more to making power than flow. My W-5's went 355. If I had another pair to start from scratch I could add another 20 to that on a 2.08 valve.
That head at 315 won't make as much power as a W-2 at 280.
