[BOS/SRT]

Two options, electric cut outs and high flow cats. Electric cutouts are a more involved install, you have to cut some of your exhaust pipe from the cats back, weld the cut outs into place and either run the wire control to your cabin or do the remote system. High flows with mids, just unbolt stock cats/mids and bolt up high flow with mids.
I have the high flows and have loved the difference in exhaust note. Opened up the flow and gave it a much throatier sound. The cut outs you can open at different levels to gain a louder throatier sound, but can get annoying, depending how far you open them.
I've been thinking about the cut outs for sometime, but I've read many having issues with it hitting with the car lowered.
I'd say start with the high flows first.