I just put on BR9 brakes from a 2016 Charger Pursuit. Biggest non-Brembo factory brakes you can get, they come in between the two different factory Brembo packages as far as size goes.
You don't get any more plug and play than factory parts. These are the BR9 parts vs my stock BR5 brakes on my 2015 Challenger R/T Plus.
I’ve never done it but I know people that have and I sell the parts for the cop cars all the time. I imagine it’s a huge difference
I can tell you my 6 piston brembos are massive difference between my 4 piston RT brakes with the small rotors. They make a 4piwtom Brembo also so I imagine this upgrade with quality pads is gonna be great
Caliper changes are needed. You will need the calipers, mounting brackets, new dust shields for the front, and possibly new front flex lines. You can source the calipers and brackets from any 2015 and up Charger Pursuit model, RWD or AWD. The front dust shields and front hoses must and I stress must come from a RWD car. The AWD cars mount the front calipers ahead of the front axle, the RWD cars mount behind so those hoses and shields are too short and facing the wrong way respectively. The dust shields are cheap, like $20 each. The hoses are a little more pricy, but buy the genuine Mopar hoses, the aftermarket ones seem to vary wildly in quality. Don't skimp there, it's your safety and everyone else's on the road too.
I was fortunate, I scored a full set of calipers, brackets and hardware from a wrecking yard about an hour from home for a song. Everything else I ordered from RockAuto.
Went with 6 and 4 piston Wilwoods for my 19 RT, took about 6-7 hours for a novice working by myself to get all four sides done. While there are more cost effective methods to gain braking performance, its hard to match the visual/performance improvements of a big brake kit. Couldn't be happier with how it improved the car's braking and looks. The install is pretty straight forward, replacing brake lines and shimming the caliper on were the most difficult aspects of the install. Overall, the upgrade is something you can do yourself on a weekend.