Hey guys, I was wondering if anyone know if the inside threading of the stock knob is solid plastic or is it hollow?

I actually have a stock knob I want to put into another vehicle and was wondering if I can simply drill the larger diameter therad pattern directly into the stock plastic threading...

I like the stock knob a lot so I'm not looking for aftermarket replacements...

P.S. Anyone know the weight of the stock knob by chance?

Thanks...