You must be talking about the 1996 XP and not a 1995.....
The Motor is not rare however the ski (96XP with that motor is harder to find than say one with a 580 657 720 etc, same hull smaller motor...)
The reason is the XP, SP, SPI, SPX, from 1993 to 1997 had variations of 587 650 720 motors but the same basic hull design.
In 1996 the xp introduced the 110 hp 787 powered ski. Which was followed in 1997 by the SPX 110 HP 787 ski.
So as you can see the 787 was only offered in two skis with that hull style (one in 1996xp ( all yellow pink stickers) and 1997 SPX White and yellow with purple stickers.)
And the other motors were offered in 4 models every year for 5 years.....