I have a 2008 RZR and need a skid plate for it.

2 wheel pros guarantees this part fits my 2008 rzr. 5439088-070 Polaris Plate – Skid Plastic Blk.

The same part is available on partzilla for less than half the price, without the guarantee it fits my machine.
5439088-070 PLATE-SKID,PLASTIC,BLK $107.95

The polaris dealer says that this part doesnt fit my machine. They want me to get an aftermarket Trail armor skid.
Trail Armor Polaris RZR, RZRS and RZRXC Center Skids

Should i trust the 2 wheel pros guarantee? Does anyone know if that part will indeed fit my 2008 rzr? Thank for your help!