Like all said the older packages used the Riva pipe, not the Factory Bpipe. The Riva pipe is the Freeride which is basically the same as Factory's Type 4.
The ride plate that comes with them should be a riva groovy. More of a race plate so having the stock is better in most folks opinion. Intake grate is the Riva tri loader, it's ok, no real need to upgrade to a worx 201 unless you have hookup issues. Prop should be a solas I or J (I think), but whatever it is it's not the best for freeride but will be servicable until you find out what you want to do with the ski.
Do you have the F/A's? They should be K&N's and fall apart. Any F/A will work but stock is best for stopping water injestion.