I had a Car Audio shop install them. They did have to remove the door panels but all the Infinity components were direct fit. Enough room to place the crossover inside the door behind the tweeter. OEM radio was still present. Later I swapped it out for a Blaupunkt Memphis MP66 which was also plug and play. Only thing it needed was a euro adapter for the antenna and a key kit both bought at Walmart. Swapped the radio myself and took maybe 30 min. tops!

I still have the OEM radio in the SRT simply because the JBLs make it sound great.