Might I suggest..........
Aftermarket knobs suck. Period. Bought a $150 MOMO knob for my R/T and it sat up about 2" higher than stock (annnnnoying), and had a generic fitment using rubber sleeves so it never felt secure. When I bought the SRT I decided to stay away from knobs altogether because of this experience.
Then came along SRT8OC.com member DEERAM who announced making these custom fit (threaded) and when I saw the revolver cylinder design I HAD to have one. I made two requests which he filled within an hour. Fill in the lettering with red paint, and lower the knob to exactly stock height. BAM! $110 well spent.
I could not be happier. It feels awesome in the hand, and the flat-top design is easier to use than the stock shifter. This is hands down one of my favorite mods.
Copied from an older thread of mine where I posted a short review of each of my mods.