The two "common" winch fairlead hole spacings are 6"- normal for a side by side, and 10" - normal for a larger winch/vehicle. If it'll fit, there's a decided advantage in the wider spacing, as that accommodates a wide spool winch. The wider spool means more wraps of a smaller diameter for better pulling power - (winch power is rated at on just one layer of line on the spool).
I have a sneaking suspicion, that you may not be able to mount a wider spool winch "tucked-in" as is commonly done on a P1K. The Warn 4.5K, that came on my SE, is a 6".