Extralite Extrabolt set 4 for Shimano V-Brakes (the upper four bolts seen in the pic below), can they also be used to mount Spooky brakes or are they a different size?

Extralite Extrabolt set 8 V-brake pivot set (see the pic below), are such pivots the same for cantilevers? Can I use them for my Spookys?

Thanks in advance!
Timo