I have a 05 srt-4 acr. They have a 2.4L turbo. Stock turbo is a Mitsubishi td04 but most people upgrade to larger turbos. Stock they were rated at 230hp 250tq. Mine made 223hp 242tq at the wheels bone stock, so once again dodge underrated it. Bone stock with a good driver the car will go 13.9 in the 1/4 mile but with a few bolt ons and a tune guys are running in the mid 12's on stock turbos. I have a upgraded mopar turbo kit, ported head and cams with some other bolt ons and made 396hp and 504tq at the front wheels.