Can anyone tell me what the center to center spacing is on the injector bosses on the SPX manifold? I'm going to be modifying my stock intake to play around with EFI and I want to drill the fuel rails in a spacing that could be used on the SPX intake as well to make future upgrades a bit easier. Something like this: Fill in the blank: X1 = ? X2 = ? X3 = ? Thanks!
