I replaced my stock tail/brake light with a 1.85" Radiantz LED cluster and replaced my rear turn signals with large Silver Bullets. I also placed a 1.85" Radiantz LED cluster in each silver bullet and installed a run/turn/brake module module link
With this setup I have 3 constant tail lights and 3 brake lights. The module also has the option of the brake lights coming on solid or with 4 or 5 quick flashes, then solid. It's pretty sweet.

Thunderpipes, 135 mains, TBS needles, snorkel & AI removed