Looks more like an 06 one to me.
A severne mast should be ok. I've used the severne race mast in an 04 8.4 V8 with very good results, but that prolly won't help if strapped for cash. I would speculate that a KA mast would be ok too. V8's won't be half as mast-sensitve as the NP race sails. Having said that, I wouldn't try a North, nor Gaastra mast in the Pryde. If I was you, I would be looking for a second hand X6.