What Big Block 727 Dipstick Tube and Locking Stick are you using in your Tube Chassis Race Car?

I was looking at the Allstar Performance Locking Trans Dipstick Chrysler TF727 Big Block Part # ALL69121, but wondered if there was a better option, or something

I could score at the Pull-A-Part?

Getting an early start on several small projects for next season.

Thanks,
Tom