wah inductors footprints/lead spacing

[vko]

Hi all,

I've been looking at some pcb layout for different wah projects as I want to make a custom pcb. 
But I got a problem with the inductor footprint. If you look at Tonepad and GGG wah projects you can see the 2 footprints are really different.
I know that the stock dunlop inductors have 0,3'' lead spacing and fasel have 0,5''.
Then, what are the other holes (0,4'' ls from tonepad and the others at GGG) made for? 

Is there a place where I can find datasheets for most of the inductors that can be used in a wah?

Thanks,

[R O Tiree]

Elaca Halo has 0.4" lead spacing.

[vko]

Could you also tell me if it has 4 or only 2 leads?

Thanks!