Are front steering 'knuckles' the same between 4 & 5 lug?

[need RX7]

I'm considering swapping brakes between my 2 FCs (one is 4-lug and the other is 5-lug). I figure the easiest way to go about it would be to take off the rear axle nuts and swap the rear knuckles complete without disassembling them, but how about the front? Could I get away with un bolting the hub themselves and swapping them, or are the caliper mounts different between the 2 types of front knuckles?

[89Rotary]

Caliper mounts a definatly different from the 4 to 5 lugs.

one should be a 4 pot brake the other a single pot brake.

[TitaniumTT]

Knuckles are the same. I just swapped hubs

[need RX7]

Kewlzorz, thanks. Now if only we would stop getting random snow flurries...