How to convert a Weber fireplace?

Hey does anybody know what parts or kit is needed to covert a Weber 27001 natural gas fireplace over to propane? Weber said they don't sell any kits for grills ect anymore.

I did a Falcon grill years ago in the 80's but the dealer just gave me the right regulator and orifices.

I am sure somebody here has done this.Thanks

Just got off the phone with ERE parts and no help.