You have a "Grey Ghost". They are registered as 98GSX's but are referred to as 97 1/2 or 97.5. In Seadoo terms its the 5625 I think. Anyway it is the first production 951 and therefore the one that BRP had to register with the EPA. Those hoses went to an electric solenoid that would kick in and lean out the mixture. Just leave them off the carbs and you will be fine.