Need to find a transmission dipstic

[Rastan]

I have a Chevy '81 C series pickup truck. It has a 5.0 (305) V-8 engine according to the owners manual... I'm not much of a mechanic, so I'm just going by the book. My problem is the transmission dipstick has the tip of it broken off. I have tried searching the couple of local junk-yards for a replacement, but they don't have anything.

I have tried searching the internet, but I haven't gotten any results.

Does anyone have an idea how I could find one of these to buy online?

Thanks for any help,
Gary