Swapping to a 4l80 so I will be going with a PY3400. This converter has less then 2k miles and is still under warranty with 1 free restall. Right now the converter is setup for about 550rwhp but started blowing through passed that so the converter will need to be tightened up if you plan to make more power. The torque converter will support 1000hp and is retailed at 900$

700 shipped

I will also entertain trades for a 4l80 converter of equal value.