I bought this diffuser over other brands because I appreciated the sharper edges to the fins and they seemed longer and squarer than others. I was pleased with the overall shape, however, when mounting it to my 2017 Challenger T/A, I found that it was too long by a 1/4 inch on either side. The holes matched up fine but the diffuser was overhanging into the molded exhaust outlets of the rear panel. I don't think that the T/A has a back panel any different than a normal R/T but what ever the deal was, this diffuser was too long. Luckily, I'm an artist and skilled enough to use a dremel tool to reshape the sides to fit around the exhaust areas but I think buyers might be displeased if their piece had the same ill fit as mine did. That said, once I reshaped the areas around the exhausts, the part ended up looking great. I just had to do a lot of work to get it to fit.
