installed le5 bottom end with l61 head  05 ecu head    06 hhr 2.4 bottom!!   doesnt run    need an external crank trigger and sensor   were do i buy one or what can i do!!!!
 
Use the front brakes and bearings from the HHR, the springs from whatever you pulled the ECU out of, and the rear parts off the 05. I don't see it working unless you pull some parts off a Z06 and get them in the mix too. Make sure you remember to swap the ABS sensors though or you're going to run into issues with the BCM kicking you off the network.