Needles: Use DCx1F serger needles and seat them a bit shallow. Align them so the needles eye matches the position of the original needles.
Drive wheel: Depending on the motor shaft size you might can still get them.
{
http://sewing-machine-parts-store.co...&brand=&page=2 }
{
http://www.shop.sew-classic.com/Moto...-Parts_c21.htm }
{
http://thayerrags.com/ }
If they don't have it, with a little bit of ingenuity and ambition, you can make your own rubber part.
Joe