But if you aren't sure I believe in the FAQ section on the Dimarzio website says that it's better to order both as F-spaced so the E strings don't sit outside the pole pieces.
Also I believe Dimarzio has the measurements on their website somewhere too, so compare them to the pickups already in your guitar.
I read in an old thread that the bridge was f spaced and the neck was normal, but then I looked at my guitar and they are the exact same size pickups. And this was posted by Pat Park who used to be the Sbmm guy on the forum years ago. I just want to be 100% sure, can Brian from Praxis get back to me? Thanks hope to hear from ya.
Off topic, I must say, ebmm snd sbmm are putting out and have been putting out the best quality best playing and looking electric guitars made, period. The EVH, Axis, Ax40 are quite possibly the finest soloing guitars ever created.