Big George Rotisserie GR80 Parts?

I bought a GR80 at a yard sale, but find it needs the following parts:
rotisserie bar with grooves P/N 20897
baking sheet P/N 20904
wire rack P/N 20905

rotisserie bar remover P/N 20906
skewers (5) P/N 20901
Any information will be appreciated.

Thanks.

By James