semi conductors for F6 kit

In addition to the JFETS I assume I also need these to complete the F6 kit?

"4 - IRFP240

4 - 5.1V Zeners"

These are currently on backorder on the DIYstore.

Are there other, external sources for these or should I just wait ?

Confirming I need both the JFETs and these semi conductors ?

thanks
 
Since the Mosfets really don't need to be matched in an F6, you could order what you need from another online source, such as Mouser or Digikey. You can also use 6.2V Zener diodes or 6.9V LM329 voltage references (not a nice drop in footprint, but it works).