http://www.e-partssales.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=P&Category_Code=PO
I think the site software parses URLs, so there is no need for the tags. Although, you would think it would also work that way since HTML is enabled. I bought a few things from Suncoast too, like the spoiler sticker.
EDIT: I think you have the tags wrong, this should work too. Let's see.
http://www.e-partssales.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=P&Category_Code=PO