The gen one and two take the same mount the yam v is the older style mount with one bolt hole and the yam v2 has two holes one for more front ski pressure and one a little further back for less.
yes. I have 1 pair of Yamaha "yam-V" mounts left. They fit the RX-1, Vector, SXR, & SRX. The yam-V is the older style mount with one bolt hole. There is a newer yam-V2 mount which has 2 sets of bolt holes to vary ski pressure. They are intended for the Apex, Nytro, ans Phazers.