i doubt they would come with baseplates for 3 hole snowboards
as far as i know, burton is the only company to have made 3 hole snowboards (might be wrong about this though). I have bought 2 pairs of burton bindings, and they came with multiple baseplates, even some for 3 holed snowboards.
The k2 bindings i recently bought didnt come with any spare baseplates....or i have misplaced them...and not to jack ur thread but if anyone knows if k2 bindings come with spare baseplates lmk (k2 hurrithanes)