Installed a reman 4.7l dodge from these *** Got 4800 miles out of it and it started knocking. Lanny is an idiot, just wants you to pull motor and send it back on my dime so he can claim it is my fault. I rebuild diesel engines and have never had one come back, so I know it was installed properly. Only thing I put on the engine was the pan, valve covers, flex plate and timing cover and crank pulley. Should have sent it back when I seen the quality of there "reman" heads. *** inserts and fixes on several of the exhaust stud holes. They are a joke and I am filing a complaint with state of Michigan.