[DeuceCam]

I just looked at the Billetworkz website. I like their "The Hybrid" shift knob. It says that it's available for "Chevy Camaro '16-'22 (Non-threaded adapter)." (Note: One has to search by shift knob, then select vehicle model (if I start with vehicle model Camaro isn't listed)). I'm going to reach out and request the specs (dimensions, weight, thread size/pitch, etc.).

There's another company called WC Lathe Werks that makes excellent shift knobs. They made me a custom one for my ae86, but that car had a very common 12x1.25 thread, so not hard to do. They don't have any listed for a Camaro, but they do offer some Corvette shift knobs, and I did see some 3/8-16 knobs... Custom could be an option, but I don't know if it would be worth their time.

Edit:
Billetworkz responded. All of their knobs come with 3/4-16 thread. Here are the specs on The Hybrid shift knob:

Weight: 330g (0.7275 lb)
Height: 3.5"
Width: 1.6"
Exterior surface: delrin (won't be affected by really hot or cold temps)

I really like the shape and material of The Hybrid knob; it's tempting. However, after learning how heavy the OEM shift knob is @ 0.90 lb, I have a feeling I won't like something lighter, especially after using the 1.4 lb Raceseng Slammer knob.

(I really like rowing-through-the-gears with the (heavier) Slammer knob because it reduces shifting effort. Disclaimer: I also have a 1.8" shift knob height extender that further reduces shifting effort because of the added leverage.)