I'm looking for a cover for my 2006 STX-15F. Found a guy who has a brand new in-box cover for a 2003 STC-12F. Its P/N W99995-447. I've searched around online and the correct 2006 15F Green Cover is P/N W99995-458.

Can I assume all W99995 covers are the same and the only difference is the color and graphics? Will the -447 cover fit? Should I ditch the OEM cover altogether and get an aftermarket?