Yes, and I looked at suppliers of racks. Seems they all want to sell long racks for a lot of money.
I have a horizontal head for my Kent mill and could make it.
I bought the Barker some years ago and just recently got around to disassembling, cleaning, and painting it. That's when I discovered the missing rack. The machine shows very little use, it is in almost new condition.
I want to set it up as a dedicated machine for gear cutting. For that purpose I could probably get along without the Z.
Oh I would just make it then. If I recall, it's not that long of a rack on the Barkers. You would have to buy the gear cutter
ps I see that Martin gear offers rack in as short as 2 foot sections. No prices given though