Update: Article now reflects Don’s update from comment section
Don Warburton built this incredible Cobra for his wife. Under the hood he installed a LS6 crate motor and 4L65E automatic transmission. The motor was wired using the factory GM ECU and a Painless harness. I like the subtle LS6 badge in the same location as the 427 badge.
Source: LS1Tech
I put the LS6 crate engine with a 4L65E trans in this kit car for my wife. I used the GM drive by wire throttle and GM ECM with a Painless harness. I used the GM factory Corvette alternator and bracket with a Walbro 255 pump mounted in the tank. It run really well and the automatic trans tones the car down for the wife to drive perfectly.